What was found in ZIP 77484
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 | 417.5 µg/L 10% of the EPA limit 4000 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2019
Highest in the ZIP: 438 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Nitrate | 285.5 µg/L 2.9% of the EPA limit 10000 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2019 | 1/2 | SYR4 |
| Barium | 230.5 µg/L 12% of the EPA limit 2000 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2019
Highest in the ZIP: 246.85 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Copper | 177.5 µg/L 14% of the EPA limit 1300 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2017
Highest in the ZIP: 219.2 µg/L — G & W WSC · 3,343 people · 2018 | 2/2 | SYR4 |
| Nitrate-Nitrite | 210 µg/L 2.1% of the EPA limit 10000 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2015 | 1/2 | SYR4 |
| Lithium | 22.8 µg/L No EPA limit set Main supplier: CITY OF WALLER · 5,448 people · 2025
Highest in the ZIP: 38 µg/L — G & W WSC · 3,343 people · 2025 | 2/2 | UCMR-5 |
| TTHM | 1.665 µg/L 2.1% of the EPA limit 80 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2019
Highest in the ZIP: 34.34 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Bromoform | 18.16 µg/L No EPA limit set Main supplier: CITY OF WALLER · 5,448 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 16.4 µg/L 0.2% of the EPA limit 10000 µg/L Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 8.31 µg/L No EPA limit set Main supplier: CITY OF WALLER · 5,448 people · 2019
Highest in the ZIP: 11.075 µg/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 10.995 µg/L No EPA limit set Main supplier: CITY OF WALLER · 5,448 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3 pCi/L 20% of the EPA limit 15 pCi/L Main supplier: CITY OF WALLER · 5,448 people · 2019
Highest in the ZIP: 9.97 pCi/L — G & W WSC · 3,343 people · 2019 | 2/2 | SYR4 |
| Lead | 9.11 µg/L 61% of the EPA limit 15 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2017 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 8.81 pCi/L No EPA limit set Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Chloroform | 8.64 µg/L No EPA limit set Main supplier: CITY OF WALLER · 5,448 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.61 µg/L 14% of the EPA limit 60 µg/L Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Arsenic | 6.255 µg/L 63% of the EPA limit 10 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 4.6 µg/L No EPA limit set Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Selenium | 3.2 µg/L 6.4% of the EPA limit 50 µg/L Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 3.03 µg/L No EPA limit set Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.6500 pCi/L 13% of the EPA limit 5 pCi/L Main supplier: CITY OF WALLER · 5,448 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 |
| Combined Uranium | 2 µg/L 6.7% of the EPA limit 30 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1.6 µg/L No EPA limit set Highest in the ZIP: G & W WSC · 3,343 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1 µg/L 17% of the EPA limit 6 µg/L Main supplier: CITY OF WALLER · 5,448 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0015 mg/L 10% of the EPA limit 0.0150 mg/L Main supplier: CITY OF WALLER · 5,448 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 77484
| Supplier | State | Population served |
|---|---|---|
| CITY OF WALLER | TX | 5,448 |
| G & W WSC | TX | 3,343 |
Frequently asked questions about ZIP 77484 tap water
Is the tap water in ZIP 77484 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 77484. 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 77484?
2 public water suppliers report EPA drinking-water monitoring for ZIP 77484. Each is listed above with its population served.
What contaminants are in ZIP 77484's water?
EPA monitoring detected Fluoride, Nitrate, Barium, Copper, Nitrate-Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.