What was found in ZIP 77331
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 800 µg/L 20% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Copper | 134 µg/L 10% of the EPA limit 1300 µg/L | 1/1 | SYR4 |
| Barium | 71.6 µg/L 3.6% of the EPA limit 2000 µg/L | 1/1 | SYR4 |
| Lithium | 59.5 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Nitrate | 50 µg/L 0.5% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Nitrate-Nitrite | 40 µg/L 0.4% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 31 µg/L 517% of the EPA limit, in the worst sample — 6 µg/L | 1/1 | SYR4 |
| Lead | 20.1 µg/L 134% of the EPA limit, in the worst sample — 15 µg/L | 1/1 | SYR4 |
| TTHM | 10 µg/L 13% of the EPA limit 80 µg/L | 1/1 | SYR4 |
| Arsenic | 8.4 µg/L 84% of the EPA limit 10 µg/L | 1/1 | SYR4 |
| Bromoform | 5.8 µg/L No EPA limit set | 1/1 | SYR4 |
| Xylenes, Total | 4.8 µg/L 0% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Selenium | 4.2 µg/L 8.4% of the EPA limit 50 µg/L | 1/1 | SYR4 |
| Dibromochloromethane | 4 µg/L No EPA limit set | 1/1 | SYR4 |
| Di(2-ethylhexyl) Adipate | 2.3 µg/L 0.6% of the EPA limit 400 µg/L | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.3 pCi/L 15% of the EPA limit 15 pCi/L | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.7 µg/L No EPA limit set | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.7 µg/L 2.8% of the EPA limit 60 µg/L | 1/1 | SYR4 |
| Bromodichloromethane | 1.6 µg/L No EPA limit set | 1/1 | SYR4 |
| Toluene | 1 µg/L 0.1% of the EPA limit 1000 µg/L | 1/1 | SYR4 |
| Ethylbenzene | 0.6000 µg/L 0.1% of the EPA limit 700 µg/L | 1/1 | SYR4 |
| Pfhxa | 0.0033 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 1/1 | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 77331
| Supplier | State | Population served |
|---|---|---|
| SAN JACINTO SUD | TX | 3,993 |
Frequently asked questions about ZIP 77331 tap water
Is the tap water in ZIP 77331 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 77331. 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 77331?
1 public water supplier report EPA drinking-water monitoring for ZIP 77331. Each is listed above with its population served.
What contaminants are in ZIP 77331's water?
EPA monitoring detected Fluoride, Copper, Barium, Lithium, Nitrate, and others across this ZIP's suppliers. The full list with levels and sources is above.