What was found in ZIP 77447
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 950 µg/L 24% of the EPA limit 4000 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2018 | 2/2 | SYR4 |
| Barium | 263.1 µg/L 13% of the EPA limit 2000 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 2/2 | SYR4 |
| Copper | 181.5 µg/L 14% of the EPA limit 1300 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2017
Highest in the ZIP: 219.2 µg/L — G & W WSC · 3,343 people · 2018 | 2/2 | SYR4 |
| Nitrate | 170 µg/L 1.7% of the EPA limit 10000 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 89 µg/L 0.9% of the EPA limit 10000 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 1/2 | SYR4 |
| Lithium | 30.3 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2025
Highest in the ZIP: 38 µg/L — G & W WSC · 3,343 people · 2025 | 2/2 | UCMR-5 |
| TTHM | 2.925 µg/L 3.7% of the EPA limit 80 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019
Highest in the ZIP: 34.34 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Chloroform | 18.465 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 1.165 µg/L 0% of the EPA limit 10000 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019
Highest in the ZIP: 16.4 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 12.7 µg/L 21% of the EPA limit 60 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.505 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019
Highest in the ZIP: 11.075 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 7.15 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019
Highest in the ZIP: 10.305 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1 pCi/L 6.7% of the EPA limit 15 pCi/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2015
Highest in the ZIP: 9.97 pCi/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Bromoform | 3.4 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019
Highest in the ZIP: 9.64 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 6.83 pCi/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2015
Highest in the ZIP: 8.81 pCi/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 7.4 µg/L 25% of the EPA limit 30 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2015 | 1/2 | SYR4 |
| Dibromoacetic Acid | 6 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 5.5 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 2/2 | SYR4 |
| Arsenic | 2.725 µg/L 27% of the EPA limit 10 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019
Highest in the ZIP: 3.625 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Lead | 3.5345 µg/L 24% of the EPA limit 15 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2017 | 2/2 | SYR4 |
| Selenium | 3.5 µg/L 7% of the EPA limit 50 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2015
Highest in the ZIP: 2.286 pCi/L — G & W WSC · 3,343 people · 2018 | 2/2 | SYR4 |
| Ethylbenzene | 2.2 µg/L 0.3% of the EPA limit 700 µg/L Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1.2 µg/L No EPA limit set Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2019
Highest in the ZIP: 1.6 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| 2,4-D | 1.355 µg/L 1.9% of the EPA limit 70 µg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2017 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NORTHWEST FREEWAY MUD · 3,678 people · 2023 | 2/2 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 77447
| Supplier | State | Population served |
|---|---|---|
| NORTHWEST FREEWAY MUD | TX | 3,678 |
| G & W WSC | TX | 3,343 |
Frequently asked questions about ZIP 77447 tap water
Is the tap water in ZIP 77447 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 77447. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 77447?
2 public water suppliers report EPA drinking-water monitoring for ZIP 77447. Each is listed above with its population served.
What contaminants are in ZIP 77447's water?
EPA monitoring detected Fluoride, Barium, Copper, Nitrate, Nitrate-Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.