What was found in ZIP 78123
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 | 2190 µg/L 22% of the EPA limit 10000 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 2082 µg/L 21% of the EPA limit 10000 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2015 | 1/1 | SYR4 |
| Fluoride | 729 µg/L 18% of the EPA limit 4000 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Copper | 280 µg/L 22% of the EPA limit 1300 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Barium | 41.18 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Lithium | 41 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2023 | 1/1 | UCMR-5 |
| TTHM | 23.950000000000003 µg/L 30% of the EPA limit 80 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 19.62999999999999 µg/L 33% of the EPA limit 60 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 13.039999999999996 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Chloroform | 11.499999999999998 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 8.66999999999997 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 8.204999999999998 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Xylenes, Total | 7.799999999999997 µg/L 0.1% of the EPA limit 10000 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 7.579999999999998 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 7.4449999999999985 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Lead | 6.385 µg/L 43% of the EPA limit 15 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Bromoform | 5.644999999999996 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 5.244999999999999 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 4.855000000000003 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Ethylbenzene | 1.16 µg/L 0.2% of the EPA limit 700 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9200 µg/L 15% of the EPA limit 6 µg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0049 µg/L No EPA limit set Main supplier: GREEN VALLEY SUD · 52,497 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: GREEN VALLEY SUD · 52,497 people · 2025 | 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 78123
| Supplier | State | Population served |
|---|---|---|
| GREEN VALLEY SUD | TX | 52,497 |
Frequently asked questions about ZIP 78123 tap water
Is the tap water in ZIP 78123 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 78123. 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 78123?
1 public water supplier report EPA drinking-water monitoring for ZIP 78123. Each is listed above with its population served.
What contaminants are in ZIP 78123's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.