ZIP 77380 Tap Water Quality Report
What the State of Texas found in the water utilities serving 77380 in The Woodlands, TX, and how to treat it.
6contaminants found above EPA health goals in at least one utility
1.3–8.9grains per gallon hardness (range across utilities in this ZIP): slightly hard to hard
12water utilities with state test results in this ZIP
Found Above EPA Health Goals
An EPA health goal is the level at which no health risk is expected. Legal limits are often higher, because they also weigh the cost of treatment. These contaminants were found above the health goal in at least one utility serving 77380.
BromoformFound in 11 of 12 utilitiesHealth goal: zeroHighest utility average: 7.5 ppbRemoved by: AquaCarb PRO & AquaCarb ELITE, PureGuard RO & PureGuard ULTRA
BromodichloromethaneFound in 11 of 12 utilitiesHealth goal: zeroHighest utility average: 14.3 ppbRemoved by: AquaCarb PRO & AquaCarb ELITE, PureGuard RO & PureGuard ULTRA
Lead (home tap samples)Found in 10 of 12 utilitiesHealth goal: zeroHighest utility average: 5.3 ppbRemoved by: PureGuard RO & PureGuard ULTRA
Dichloroacetic acidFound in 8 of 12 utilitiesHealth goal: zeroHighest utility average: 8.3 ppbRemoved by: AquaCarb PRO & AquaCarb ELITE, PureGuard RO & PureGuard ULTRA
ArsenicFound in 2 of 12 utilitiesHealth goal: zero · Legal limit: 10 ppbHighest utility average: 3.9 ppbRemoved by: PureGuard RO & PureGuard ULTRA
Radium (combined 226 + 228)Found in 2 of 12 utilitiesHealth goal: zero · Legal limit: 5 pCi/LHighest utility average: 2.5 pCi/LRemoved by: Water softener, PureGuard RO & PureGuard ULTRA
Source: Test results from the Texas Commission on Environmental Quality (TCEQ) Drinking Water Viewer, samples collected October 2023 through October 2026. Health goals and legal limits from the U.S. EPA National Primary Drinking Water Regulations. Each utility below lists its state water system ID so you can look up its records.
Results by Water Utility
Your water utility is the name on your water bill. Open it to see everything the state found in its water from October 2023 through October 2026.
Montgomery County MUD 46 serves about 24,399 people · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 12.2 ppb | 22.3 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.8 ppb | 7.7 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 6.5 ppb | 11.7 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 1.5 ppb | 2.9 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 3.7 ppb | 5.8 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 15.6 ppb | 27.6 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.063 ppm | 0.2 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 2.2 ppb | 3.1 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 11.3 ppb | 19.2 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 13.3 ppb | 21 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Monochloroacetic acid A haloacetic acid disinfection byproduct. | 2.3 ppb | 2.3 ppb | part of HAA5 | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.32 ppm | 0.36 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Nitrate + nitrite From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.36 ppm | 0.36 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 42.8 ppb | 70.5 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 4.6 ppb | 9 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1700348. 80 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700348.
Southern Montgomery County MUD serves about 15,966 people · hardness 4.9 gpg (moderately hard) · 5 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Arsenic Above health goal Occurs naturally in Texas groundwater. Long-term exposure is linked to cancer and to skin and circulatory problems. | 3.9 ppb | 3.9 ppb | 10 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 7.5 ppb | 19.7 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 6.1 ppb | 18.9 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 4.4 ppb | 9.5 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 0.75 ppb | 1.1 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.13 ppm | 0.2 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 2.6 ppb | 5.3 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 49 ppm | 58 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 9.9 ppb | 20.1 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.088 ppm | 0.2 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 2.3 ppb | 3.6 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 10 ppb | 26.9 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 0.68 ppm | 0.78 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 10.1 ppb | 19.8 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.098 ppm | 0.16 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0018 ppm | 0.0034 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.17 ppm | 0.2 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 70.9 ppm | 108 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 8.5 ppm | 10 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 281 ppm | 334 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 38.2 ppb | 72.3 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 3.4 ppb | 6.7 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.0077 ppm | 0.0077 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Xylenes, Total, Ethylbenzene.
Source: TCEQ Drinking Water Viewer, public water system ID TX1700073. 92 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700073.
Montgomery County MUD 7 serves about 12,528 people · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 14.3 ppb | 21.4 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.5 ppb | 6.1 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 7.7 ppb | 13.6 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 2.3 ppb | 7.5 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 4.5 ppb | 7.6 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 18.7 ppb | 32.7 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.073 ppm | 0.31 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 2.5 ppb | 4.2 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 12.2 ppb | 19.3 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 15.4 ppb | 24.9 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Monochloroacetic acid A haloacetic acid disinfection byproduct. | 2.2 ppb | 2.3 ppb | part of HAA5 | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.29 ppm | 0.33 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Nitrate + nitrite From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.33 ppm | 0.33 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 48.7 ppb | 70.2 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 5.1 ppb | 9 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1700169. 112 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700169.
Northampton MUD serves about 12,162 people · hardness 1.8 gpg (slightly hard) · 3 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 1.6 ppb | 2 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 4 ppb | 11 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Radium (combined 226 + 228) Above health goal Naturally radioactive. Long-term exposure is linked to cancer. | 1.5 pCi/L | 1.5 pCi/L | 5 pCi/L | Zero | Water softener PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.14 ppm | 0.22 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 78.5 ppm | 84 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.0033 ppm | 0.0035 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 3.1 ppb | 6.8 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 1.1 ppm | 1.4 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.049 ppm | 0.087 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0081 ppm | 0.0081 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 183 ppm | 209 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 19 ppm | 19 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 501 ppm | 540 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 3.2 ppb | 5.6 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Alkalinity, Carbonate.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010337. 49 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1010337.
Montgomery County MUD 6 serves about 8,610 people · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 13.8 ppb | 25 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.6 ppb | 7.4 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 7.6 ppb | 14 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 2.6 ppb | 8.3 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 4.2 ppb | 8 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 18.5 ppb | 35 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.096 ppm | 0.26 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 2.4 ppb | 5.5 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 12.4 ppb | 26.2 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 15.1 ppb | 28.6 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.33 ppm | 0.33 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 48.3 ppb | 84.6 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 5 ppb | 11 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Monobromoacetic Acid.
Source: TCEQ Drinking Water Viewer, public water system ID TX1700090. 41 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700090.
The Woodlands MUD 1 serves about 7,989 people · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 11.5 ppb | 20.8 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.2 ppb | 8.1 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 6.7 ppb | 15 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 5.3 ppb | 36.5 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 3.7 ppb | 7.3 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 16.4 ppb | 29.6 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.086 ppm | 0.25 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 2.1 ppb | 3.4 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 10.1 ppb | 20.7 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 13.7 ppb | 26.6 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.16 ppm | 0.39 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Nitrate + nitrite From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.14 ppm | 0.14 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 41.2 ppb | 69.5 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 4.9 ppb | 9.1 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1700471. 68 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700471.
Montgomery County WCID 1 serves about 7,070 people · hardness 1.4 gpg (slightly hard) · 3 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 2.3 ppb | 5.4 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.7 ppb | 5.2 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 2.2 ppb | 2.2 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.11 ppm | 0.13 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 1.8 ppb | 2.1 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 74.5 ppm | 84 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 2.1 ppb | 3.3 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.2 ppm | 0.64 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 1.8 ppb | 2.2 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 4.1 ppb | 7.1 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 1.2 ppm | 1.2 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 3.1 ppb | 5.8 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.13 ppm | 0.15 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0048 ppm | 0.0065 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 224 ppm | 247 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 12.5 ppm | 14 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 469 ppm | 489 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 16.7 ppb | 19.4 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 1.7 ppb | 1.7 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.012 ppm | 0.012 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Chloromethane, Methyl Isobutyl Ketone, Xylenes, Total.
Source: TCEQ Drinking Water Viewer, public water system ID TX1700119. 45 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700119.
Montgomery County MUD 36 serves about 5,235 people · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 13.4 ppb | 17.6 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.4 ppb | 4.8 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 8.3 ppb | 11.3 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 2.2 ppb | 7.5 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 4.8 ppb | 6 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 17.6 ppb | 24.5 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.085 ppm | 0.62 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 2.6 ppb | 2.9 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 12 ppb | 14.8 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 18.1 ppb | 30.2 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Monochloroacetic acid A haloacetic acid disinfection byproduct. | 3.4 ppb | 4.6 ppb | part of HAA5 | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.19 ppm | 0.19 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 46.4 ppb | 59 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 6.1 ppb | 11.5 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1700139. 29 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700139.
Harris County Improvement District 18 serves about 5,025 people · hardness 1.3 gpg (slightly hard) · 3 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 1.5 ppb | 1.8 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 7.5 ppb | 10.2 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 4.2 ppb | 4.2 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Aluminum Can discolor water. | 0.031 ppm | 0.031 ppm | 0.2 guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.091 ppm | 0.091 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 101 ppm | 101 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.088 ppm | 0.53 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 1.6 ppb | 2.2 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 4.6 ppb | 5.3 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 2.7 ppm | 2.7 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 1.6 ppb | 2.2 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.037 ppm | 0.037 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0034 ppm | 0.0034 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 295 ppm | 295 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 2 ppm | 2 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 742 ppm | 742 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 14.8 ppb | 16.7 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.04 ppm | 0.04 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1013479. 39 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1013479.
Montgomery County MUD 19 serves about 4,422 people · hardness 4.7 gpg (moderately hard) · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Arsenic Above health goal Occurs naturally in Texas groundwater. Long-term exposure is linked to cancer and to skin and circulatory problems. | 2.8 ppb | 2.8 ppb | 10 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 1.4 ppb | 1.9 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.3 ppb | 7.2 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 0.72 ppb | 1.3 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.16 ppm | 0.21 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 65 ppm | 120 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.057 ppm | 0.14 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 1.5 ppb | 2 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 2.4 ppb | 4.7 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 0.81 ppm | 1.1 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 1.5 ppb | 2 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.12 ppm | 0.29 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0054 ppm | 0.0084 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Nickel A natural metal. No federal limit. | 2.3 ppb | 2.3 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.15 ppm | 0.16 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 132 ppm | 254 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 3 ppm | 3 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 430 ppm | 666 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 8.6 ppb | 13.8 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.013 ppm | 0.017 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Alkalinity, Carbonate.
Source: TCEQ Drinking Water Viewer, public water system ID TX1700319. 61 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700319.
Encanto Real Utility District serves about 3,717 people · hardness 8.9 gpg (hard) · 3 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 1.2 ppb | 1.8 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Radium (combined 226 + 228) Above health goal Naturally radioactive. Long-term exposure is linked to cancer. | 2.5 pCi/L | 2.5 pCi/L | 5 pCi/L | Zero | Water softener PureGuard RO & PureGuard ULTRA |
| Radium-228 (part of combined radium) Above health goal Naturally radioactive. Long-term exposure is linked to cancer. | 1 pCi/L | 1 pCi/L | 5 combined (pCi/L) | Zero | Water softener PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.18 ppm | 0.18 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 46 ppm | 46 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.063 ppm | 0.29 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 6.9 ppb | 6.9 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Monochloroacetic acid A haloacetic acid disinfection byproduct. | 6.9 ppb | 6.9 ppb | part of HAA5 | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Nickel A natural metal. No federal limit. | 1.6 ppb | 1.6 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.14 ppm | 0.14 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 28.8 ppm | 28.8 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 5 ppm | 5 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 282 ppm | 282 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.0067 ppm | 0.0067 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1010687. 76 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1010687.
City of Oak Ridge North serves about 3,498 people · hardness 3.8 gpg (moderately hard) · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 7.1 ppb | 13.1 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 2.2 ppb | 2.7 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 5.1 ppb | 5.7 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Lead (home tap samples) Above health goal No safe level for children. Lead usually comes from household plumbing and fixtures, not the utility. | 3.3 ppb | 12 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Aluminum Can discolor water. | 0.026 ppm | 0.026 ppm | 0.2 guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.18 ppm | 0.18 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 3.1 ppb | 3.9 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 27 ppm | 27 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 10.2 ppb | 15.7 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.028 ppm | 0.078 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 1.9 ppb | 2.1 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 6.1 ppb | 9.9 ppb | part of TTHMs | 60 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Haloacetic acids (HAA5) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 9.8 ppb | 11.1 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.055 ppm | 0.055 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0091 ppm | 0.0091 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 76 ppm | 76 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 258 ppm | 258 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total trihalomethanes (TTHMs) Disinfection byproducts that form when chlorine reacts with organic matter. Long-term exposure is linked to cancer. | 29.2 ppb | 41.2 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 2.9 ppb | 3.4 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1700025. 38 samples tested October 2023 through October 2026. To see the state records yourself, open the TCEQ Drinking Water Viewer ↗, choose Water Systems and search for TX1700025.
How We Treat The Woodlands Water
This is what each of our systems does about the contaminants found in 77380.
| Found in 77380 | Water softener | AquaCarb PRO / ELITE | PureGuard RO / PureGuard ULTRA |
|---|---|---|---|
| Hardness (1.3–8.9 grains per gallon) | ✓ | – | ✓ |
| Arsenic | – | – | ✓ |
| Bromodichloromethane | – | ✓ | ✓ |
| Bromoform | – | ✓ | ✓ |
| Dichloroacetic acid | – | ✓ | ✓ |
| Lead (home tap samples) | – | – | ✓ |
| Radium (combined 226 + 228) | ✓ | – | ✓ |
| Haloacetic acids (HAA5) | – | ✓ | ✓ |
| Iron | ✓ | – | – |
| Manganese | ✓ | – | – |
| Sodium | – | – | ✓ |
| Total dissolved solids (TDS) | – | – | ✓ |
| Total trihalomethanes (TTHMs) | – | ✓ | ✓ |
That is why our SENTINEL packages pair a whole-home system with a PureGuard RO & PureGuard ULTRA drinking water system. The softener and AquaCarb handle the water that goes on you. Reverse osmosis handles the water that goes in you. Salt delivery and filter changes are covered by the UnitedCare Membership.
About This Report
Test results come from the Texas Commission on Environmental Quality (TCEQ) Drinking Water Viewer, covering samples collected October 2023 through October 2026. Legal limits and health goals are from the U.S. Environmental Protection Agency's National Primary and Secondary Drinking Water Regulations. "Average found" is the average of samples where the contaminant was detected.
Utility reports show the water the utility delivers. What comes out of your tap also depends on your home's plumbing. Lead and copper results come from samples taken at customers' taps. The best way to know what is in your water is to test it at your sink. We do that for free.
Every utility listed here is required to meet federal standards, and finding a contaminant above a health goal does not mean a utility is out of compliance.