What was found in ZIP 78116
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 |
|---|---|---|---|
| Nitrate | 3314.999999999998 µg/L 33% of the EPA limit 10000 µg/L Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 2886 µg/L 29% of the EPA limit 10000 µg/L Main supplier: EL OSO WSC · 6,288 people · 2015 | 1/1 | SYR4 |
| Fluoride | 998.5 µg/L 25% of the EPA limit 4000 µg/L Main supplier: EL OSO WSC · 6,288 people · 2017 | 1/1 | SYR4 |
| Copper | 165.49999999999997 µg/L 13% of the EPA limit 1300 µg/L Main supplier: EL OSO WSC · 6,288 people · 2018 | 1/1 | SYR4 |
| TTHM | 104.24999999999997 µg/L 130% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Lithium | 76.5 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2024 | 1/1 | UCMR-5 |
| Barium | 75.7 µg/L 3.8% of the EPA limit 2000 µg/L Main supplier: EL OSO WSC · 6,288 people · 2017 | 1/1 | SYR4 |
| Bromoform | 47.06000000000001 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 38.040000000000006 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 22.879999999999985 µg/L 38% of the EPA limit 60 µg/L Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 15.2 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 13.559999999999997 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Arsenic | 13.319999999999999 µg/L 133% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 10.07 pCi/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2016 | 1/1 | SYR4 |
| Monochloroacetic Acid | 7.67 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Lead | 5.544999999999997 µg/L 37% of the EPA limit 15 µg/L Main supplier: EL OSO WSC · 6,288 people · 2018 | 1/1 | SYR4 |
| Dichloroacetic Acid | 5.3 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 5.2 µg/L 17% of the EPA limit 30 µg/L Main supplier: EL OSO WSC · 6,288 people · 2016 | 1/1 | SYR4 |
| Chloroform | 4.5 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 3.5 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Selenium | 3.48 µg/L 7% of the EPA limit 50 µg/L Main supplier: EL OSO WSC · 6,288 people · 2017 | 1/1 | SYR4 |
| Monobromoacetic Acid | 3.05 µg/L No EPA limit set Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2 pCi/L 13% of the EPA limit 15 pCi/L Main supplier: EL OSO WSC · 6,288 people · 2016 | 1/1 | SYR4 |
| Styrene | 0.5000 µg/L 0.5% of the EPA limit 100 µg/L Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Xylenes, Total | 0.5000 µg/L 0% of the EPA limit 10000 µg/L Main supplier: EL OSO WSC · 6,288 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L Main supplier: EL OSO WSC · 6,288 people · 2023 | 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 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 78116
| Supplier | State | Population served |
|---|---|---|
| EL OSO WSC | TX | 6,288 |
Frequently asked questions about ZIP 78116 tap water
Is the tap water in ZIP 78116 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 78116. 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 78116?
1 public water supplier report EPA drinking-water monitoring for ZIP 78116. Each is listed above with its population served.
What contaminants are in ZIP 78116's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.