ZIP 77037 Tap Water Quality Report
What the State of Texas found in the water utilities serving 77037 in Houston, TX, and how to treat it.
9contaminants found above EPA health goals in at least one utility
7.3–12grains per gallon hardness (range across utilities in this ZIP): hard to very 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 77037.
Gross alpha radioactivityFound in 9 of 12 utilitiesHealth goal: zero · Legal limit: 15 pCi/LHighest utility average: 7.8 pCi/LRemoved by: PureGuard RO & PureGuard ULTRA
UraniumFound in 8 of 12 utilitiesHealth goal: zero · Legal limit: 30 ppbHighest utility average: 17.9 ppbRemoved by: PureGuard RO & PureGuard ULTRA
Gross beta radioactivityFound in 8 of 12 utilitiesHealth goal: zeroHighest utility average: 11.5 pCi/LRemoved by: PureGuard RO & PureGuard ULTRA
Lead (home tap samples)Found in 5 of 12 utilitiesHealth goal: zeroHighest utility average: 3.5 ppbRemoved by: PureGuard RO & PureGuard ULTRA
BromoformFound in 3 of 12 utilitiesHealth goal: zeroHighest utility average: 3.7 ppbRemoved by: AquaCarb PRO & AquaCarb ELITE, PureGuard RO & PureGuard ULTRA
BromodichloromethaneFound in 3 of 12 utilitiesHealth goal: zeroHighest utility average: 8.6 ppbRemoved by: AquaCarb PRO & AquaCarb ELITE, PureGuard RO & PureGuard ULTRA
ArsenicFound in 2 of 12 utilitiesHealth goal: zero · Legal limit: 10 ppbHighest utility average: 3.6 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: 3.8 pCi/LRemoved by: Water softener, PureGuard RO & PureGuard ULTRA
Dichloroacetic acidFound in 1 of 12 utilitiesHealth goal: zeroHighest utility average: 16.3 ppbRemoved by: AquaCarb PRO & AquaCarb ELITE, 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.
City of Houston serves about 2,202,531 people · hardness 7.3 gpg (hard) · 6 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. | 3.6 ppb | 4.1 ppb | 10 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 8.6 ppb | 17 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 1.5 ppb | 2 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dichloroacetic acid Above health goal A haloacetic acid disinfection byproduct. | 16.3 ppb | 29.9 ppb | part of HAA5 | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 7.8 pCi/L | 7.8 pCi/L | 15 pCi/L | Zero | 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. | 3.5 ppb | 13.9 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Aluminum Can discolor water. | 0.063 ppm | 0.1 ppm | 0.2 guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Atrazine A weed killer that runs off farm fields. | 0.14 ppb | 0.19 ppb | 3 ppb | 3 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.13 ppm | 0.28 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Bromochloroacetic acid A haloacetic acid disinfection byproduct. | 4.7 ppb | 6.9 ppb | None | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 43.4 ppm | 116 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 22.6 ppb | 50 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.12 ppm | 1.2 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromoacetic acid A haloacetic acid disinfection byproduct. | 1.4 ppb | 2.1 ppb | part of HAA5 | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 2.5 ppb | 5.1 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. | 0.21 ppm | 0.21 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. | 21.3 ppb | 38.1 ppb | 60 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.099 ppm | 1.3 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.019 ppm | 0.22 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Monochloroacetic acid A haloacetic acid disinfection byproduct. | 3.6 ppb | 3.6 ppb | part of HAA5 | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Nickel A natural metal. No federal limit. | 2.2 ppb | 3.9 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.32 ppm | 0.77 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Selenium A natural mineral that is harmful at high levels. | 5.6 ppb | 7.3 ppb | 50 ppb | 50 ppb | PureGuard RO & PureGuard ULTRA |
| Simazine A weed killer that runs off fields and roadsides. | 0.09 ppb | 0.09 ppb | 4 ppb | 4 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 43.5 ppm | 110 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 21.6 ppm | 58 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 257 ppm | 355 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. | 32.5 ppb | 53.8 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Trichloroacetic acid A haloacetic acid disinfection byproduct. | 5.2 ppb | 9 ppb | part of HAA5 | 20 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.011 ppm | 0.018 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Chlorite, Thallium, Total, Di(2-Ethylhexyl) Adipate, Di(2-Ethylhexyl) Phthalate, Carbon, Total, Xylenes, Total, Texas Lead, Cyanide - Free.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010013. 1317 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 TX1010013.
Sunbelt Fresh Water Supply District Northline Terrace serves about 3,225 people · hardness 9.8 gpg (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. | 2.1 ppb | 2.1 ppb | 10 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 6 pCi/L | 6 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 5.5 pCi/L | 5.5 pCi/L | 50 screening level (pCi/L) | Zero | 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. | 0.6 ppb | 0.72 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 9.1 ppb | 9.1 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Aluminum Can discolor water. | 0.02 ppm | 0.02 ppm | 0.2 guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.36 ppm | 0.36 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 55 ppm | 55 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.014 ppm | 0.05 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 1 ppm | 1 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0071 ppm | 0.0071 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Nickel A natural metal. No federal limit. | 1.4 ppb | 1.4 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.26 ppm | 0.26 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. | 30.1 ppm | 30.1 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 11 ppm | 11 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 314 ppm | 314 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.045 ppm | 0.045 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Gross Alpha, Incl. Radon & U, Texas Lead.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010117. 25 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 TX1010117.
Blue Bell Manor Subdivision serves about 2,607 people · hardness 10.5 gpg (very hard) · 7 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 6.6 ppb | 6.6 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 3.7 ppb | 8.9 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 2.3 pCi/L | 3.5 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 4.1 pCi/L | 4.1 pCi/L | 50 screening level (pCi/L) | Zero | 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 |
| Radium-228 (part of combined radium) Above health goal Naturally radioactive. Long-term exposure is linked to cancer. | 1.5 pCi/L | 1.5 pCi/L | 5 combined (pCi/L) | Zero | Water softener PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 5.7 ppb | 5.7 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.25 ppm | 0.27 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 52.5 ppm | 53 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Chloroform A trihalomethane disinfection byproduct. | 4 ppb | 4 ppb | part of TTHMs | 70 ppb | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.0017 ppm | 0.0042 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 6.2 ppb | 11 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. | 0.12 ppm | 0.12 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.011 ppm | 0.011 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Manganese Causes black staining and a bitter taste. | 0.0012 ppm | 0.0012 ppm | 0.05 taste/stain guideline (ppm) | None set | Water softener |
| Nickel A natural metal. No federal limit. | 1.6 ppb | 1.8 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.23 ppm | 0.29 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Selenium A natural mineral that is harmful at high levels. | 3.5 ppb | 3.5 ppb | 50 ppb | 50 ppb | PureGuard RO & PureGuard ULTRA |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 31.4 ppm | 32.2 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 6 ppm | 7 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 299 ppm | 309 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. | 2.6 ppb | 2.6 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.021 ppm | 0.037 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Dibromomethane, Xylenes, Total, Ethylbenzene, Gross Alpha, Incl. Radon & U.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010647. 35 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 TX1010647.
Nitsch & Son Utility serves about 2,217 people · hardness 9.5 gpg (hard) · 8 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Bromodichloromethane Above health goal A trihalomethane disinfection byproduct. | 1.2 ppb | 1.2 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Bromoform Above health goal A trihalomethane disinfection byproduct. | 1.8 ppb | 1.8 ppb | part of TTHMs | Zero | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 5 pCi/L | 5 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 11.5 pCi/L | 11.5 pCi/L | 50 screening level (pCi/L) | Zero | PureGuard RO & PureGuard ULTRA |
| Radium (combined 226 + 228) Above health goal Naturally radioactive. Long-term exposure is linked to cancer. | 3.8 pCi/L | 3.8 pCi/L | 5 pCi/L | Zero | Water softener PureGuard RO & PureGuard ULTRA |
| Radium-226 (part of combined radium) Above health goal Naturally radioactive. Long-term exposure is linked to cancer. | 2.8 pCi/L | 2.8 pCi/L | 5 combined (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. | 1.1 pCi/L | 1.1 pCi/L | 5 combined (pCi/L) | Zero | Water softener PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 17.9 ppb | 17.9 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.31 ppm | 0.31 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 52 ppm | 52 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Dibromochloromethane A trihalomethane disinfection byproduct. | 2.2 ppb | 2.2 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. | 0.17 ppm | 0.17 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.043 ppm | 0.043 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Nickel A natural metal. No federal limit. | 1.4 ppb | 1.4 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.22 ppm | 0.22 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Selenium A natural mineral that is harmful at high levels. | 11.6 ppb | 11.6 ppb | 50 ppb | 50 ppb | PureGuard RO & PureGuard ULTRA |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 35.3 ppm | 35.3 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 9 ppm | 9 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 295 ppm | 295 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. | 5.2 ppb | 5.2 ppb | 80 ppb | None set | AquaCarb PRO & AquaCarb ELITE PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.024 ppm | 0.024 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Gross Alpha, Incl. Radon & U.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010145. 18 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 TX1010145.
Westfield Garden Mobile Home Park serves about 942 people · hardness 9.2 gpg (hard) · 3 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 3 pCi/L | 3 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 5.3 pCi/L | 5.3 pCi/L | 50 screening level (pCi/L) | Zero | PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 6.2 ppb | 6.2 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.26 ppm | 0.26 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 47 ppm | 47 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 0.15 ppm | 0.15 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Nickel A natural metal. No federal limit. | 1.4 ppb | 1.4 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.3 ppm | 0.32 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. | 33 ppm | 33 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 8 ppm | 8 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 313 ppm | 313 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.015 ppm | 0.015 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Gross Alpha, Incl. Radon & U.
Source: TCEQ Drinking Water Viewer, public water system ID TX1011947. 26 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 TX1011947.
Harris County Municipal Utility District 321 serves about 882 people · 1 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. | 0.68 ppb | 0.9 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.096 ppm | 0.18 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.05 ppm | 0.05 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1012913. 24 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 TX1012913.
Sunbelt Fresh Water Supply District Oakglen Subdivision serves about 693 people · hardness 8.9 gpg (hard) · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 7 pCi/L | 7 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 5.9 pCi/L | 5.9 pCi/L | 50 screening level (pCi/L) | Zero | 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. | 2.7 ppb | 4.2 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 5.3 ppb | 5.3 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.3 ppm | 0.3 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 52 ppm | 52 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.18 ppm | 0.81 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 0.16 ppm | 0.16 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Nickel A natural metal. No federal limit. | 1.4 ppb | 1.4 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.3 ppm | 0.32 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. | 31.7 ppm | 31.7 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Sulfate Can give water a bitter taste. | 7 ppm | 7 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 289 ppm | 289 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.02 ppm | 0.02 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Gross Alpha, Incl. Radon & U.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010188. 26 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 TX1010188.
Pin Oak Mobile Home Park serves about 345 people · hardness 11.1 gpg (very hard) · 3 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 3 pCi/L | 3 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 6.2 pCi/L | 6.2 pCi/L | 50 screening level (pCi/L) | Zero | PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 8.3 ppb | 8.3 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.36 ppm | 0.36 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 56 ppm | 56 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.011 ppm | 0.021 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 0.12 ppm | 0.12 ppm | 4 ppm | 4 ppm | PureGuard RO & PureGuard ULTRA |
| Nickel A natural metal. No federal limit. | 1.7 ppb | 1.7 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.24 ppm | 0.24 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. | 30.8 ppm | 30.8 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. | 323 ppm | 323 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.019 ppm | 0.019 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Gross Alpha, Incl. Radon & U.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010826. 19 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 TX1010826.
Mading Lane serves about 312 people · hardness 12 gpg (very hard) · 0 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Barium A natural metal. High levels can raise blood pressure. | 0.22 ppm | 0.22 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 54 ppm | 54 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.013 ppm | 0.022 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Fluoride Natural or added by the utility. Very high levels can affect teeth and bones. | 0.11 ppm | 0.11 ppm | 4 ppm | 4 ppm | 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. | 0.16 ppm | 0.17 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. | 33.4 ppm | 33.4 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. | 344 ppm | 344 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Source: TCEQ Drinking Water Viewer, public water system ID TX1010517. 17 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 TX1010517.
Rosewood Mobile Home Park serves about 234 people · 0 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|
Source: TCEQ Drinking Water Viewer, public water system ID TX1011971. 0 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 TX1011971.
Carby Mobile Home Park serves about 210 people · hardness 11.2 gpg (very hard) · 3 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 6 pCi/L | 6 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 6 pCi/L | 6 pCi/L | 50 screening level (pCi/L) | Zero | PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 9.5 ppb | 9.5 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.37 ppm | 0.38 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 57 ppm | 57 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.002 ppm | 0.002 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Iron Causes rust stains and a metallic taste. | 0.042 ppm | 0.065 ppm | 0.3 taste/stain guideline (ppm) | None set | Water softener |
| Nickel A natural metal. No federal limit. | 1.8 ppb | 1.8 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.22 ppm | 0.22 ppm | 10 ppm | 10 ppm | PureGuard RO & PureGuard ULTRA |
| Selenium A natural mineral that is harmful at high levels. | 5 ppb | 5.4 ppb | 50 ppb | 50 ppb | PureGuard RO & PureGuard ULTRA |
| Sodium No federal limit. EPA advises 20 ppm or less for people on low-sodium diets. | 36.2 ppm | 36.2 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 329 ppm | 329 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Zinc Can give water a metallic taste. | 0.022 ppm | 0.025 ppm | 5 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Gross Alpha, Incl. Radon & U.
Source: TCEQ Drinking Water Viewer, public water system ID TX1011632. 21 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 TX1011632.
Melrose Mobile Home Park serves about 186 people · hardness 11.5 gpg (very hard) · 4 above health goals
| Contaminant | Average found | Highest found | Legal limit | EPA health goal | Removed by |
|---|---|---|---|---|---|
| Gross alpha radioactivity Above health goal Natural radioactivity from uranium and radium in groundwater. | 7 pCi/L | 7 pCi/L | 15 pCi/L | Zero | PureGuard RO & PureGuard ULTRA |
| Gross beta radioactivity Above health goal Radioactivity from natural and man-made sources. | 6.9 pCi/L | 6.9 pCi/L | 50 screening level (pCi/L) | Zero | 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. | 0.9 ppb | 0.9 ppb | 15 action level (ppb) | Zero | PureGuard RO & PureGuard ULTRA |
| Uranium Above health goal A naturally radioactive metal in Texas groundwater. | 9 ppb | 9 ppb | 30 ppb | Zero | PureGuard RO & PureGuard ULTRA |
| Barium A natural metal. High levels can raise blood pressure. | 0.43 ppm | 0.43 ppm | 2 ppm | 2 ppm | Water softener PureGuard RO & PureGuard ULTRA |
| Chloride Gives water a salty taste. | 53 ppm | 53 ppm | 250 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
| Copper (home tap samples) Usually comes from household copper plumbing. | 0.012 ppm | 0.018 ppm | 1.3 action level (ppm) | 1.3 ppm | PureGuard RO & PureGuard ULTRA |
| Nickel A natural metal. No federal limit. | 1.5 ppb | 1.5 ppb | None | None set | Water softener PureGuard RO & PureGuard ULTRA |
| Nitrate From fertilizer, septic systems and natural deposits. High levels are dangerous for infants. | 0.21 ppm | 0.21 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. | 30.9 ppm | 30.9 ppm | None | None set | PureGuard RO & PureGuard ULTRA |
| Total dissolved solids (TDS) Everything dissolved in the water. High TDS affects taste. | 321 ppm | 321 ppm | 500 taste guideline (ppm) | None set | PureGuard RO & PureGuard ULTRA |
Also detected (no federal limit or health goal): Gross Alpha, Incl. Radon & U.
Source: TCEQ Drinking Water Viewer, public water system ID TX1010743. 17 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 TX1010743.
How We Treat Houston Water
This is what each of our systems does about the contaminants found in 77037.
| Found in 77037 | Water softener | AquaCarb PRO / ELITE | PureGuard RO / PureGuard ULTRA |
|---|---|---|---|
| Hardness (7.3–12 grains per gallon) | ✓ | – | ✓ |
| Arsenic | – | – | ✓ |
| Bromodichloromethane | – | ✓ | ✓ |
| Bromoform | – | ✓ | ✓ |
| Dichloroacetic acid | – | ✓ | ✓ |
| Gross alpha radioactivity | – | – | ✓ |
| Gross beta radioactivity | – | – | ✓ |
| Lead (home tap samples) | – | – | ✓ |
| Radium (combined 226 + 228) | ✓ | – | ✓ |
| Uranium | – | – | ✓ |
| 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.