What was found in ZIP 79510
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-Nitrite | 1357.5 µg/L 14% of the EPA limit 10000 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Nitrite | 740 µg/L 74% of the EPA limit 1000 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Nitrate | 525 µg/L 5.3% of the EPA limit 10000 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Copper | 320.95 µg/L 25% of the EPA limit 1300 µg/L Main supplier: POTOSI WSC · 7,413 people · 2018 | 3/3 | SYR4 |
| Fluoride | 277 µg/L 6.9% of the EPA limit 4000 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Barium | 214.45 µg/L 11% of the EPA limit 2000 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Cyanide | 176.85 µg/L 88% of the EPA limit 200 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| TTHM | 92.23 µg/L 115% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 171.1 µg/L — EULA WSC · 3,918 people · 2019 | 3/3 | SYR4 |
| Bromoform | 62.65 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 95.01 µg/L — EULA WSC · 3,918 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 40.4 µg/L 67% of the EPA limit 60 µg/L Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 60.64 µg/L — CITY OF CLYDE · 3,820 people · 2019 | 3/3 | SYR4 |
| Chloroform | 7.05 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 42.975 µg/L — CITY OF CLYDE · 3,820 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 8.78 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 42.05 µg/L — CITY OF CLYDE · 3,820 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 27.5 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 39.84 µg/L — EULA WSC · 3,918 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 6.35 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 28.1 µg/L — CITY OF CLYDE · 3,820 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 25.9 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 13.09 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 24.03 µg/L — EULA WSC · 3,918 people · 2019 | 3/3 | SYR4 |
| Lithium | 15.1 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025 | 3/3 | UCMR-5 |
| Monochloroacetic Acid | 11.75 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 14.59 µg/L — CITY OF CLYDE · 3,820 people · 2019 | 3/3 | SYR4 |
| Lead | 13.12 µg/L 87% of the EPA limit 15 µg/L Main supplier: POTOSI WSC · 7,413 people · 2018 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 9.7 pCi/L No EPA limit set Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2017 | 1/3 | SYR4 |
| Selenium | 7.0085 µg/L 14% of the EPA limit 50 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 3.25 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2019
Highest in the ZIP: 4.33 µg/L — CITY OF CLYDE · 3,820 people · 2019 | 3/3 | SYR4 |
| Arsenic | 3.54 µg/L 35% of the EPA limit 10 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Xylenes, Total | 2.98 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Dalapon | 1.2 µg/L 0.6% of the EPA limit 200 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Chromium | 0.6152 µg/L 0.6% of the EPA limit 100 µg/L Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0220 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025
Highest in the ZIP: 0.0310 µg/L — EULA WSC · 3,918 people · 2024 | 3/3 | UCMR-5 |
| PFHXS | 0.0199 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025
Highest in the ZIP: 0.0225 µg/L — CITY OF CLYDE · 3,820 people · 2025 | 3/3 | UCMR-5 |
| PFOS | 0.0210 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025 | 3/3 | UCMR-5 |
| Pfhxa | 0.0157 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025
Highest in the ZIP: 0.0164 µg/L — CITY OF CLYDE · 3,820 people · 2025 | 3/3 | UCMR-5 |
| Pfpea | 0.0136 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025
Highest in the ZIP: 0.0145 µg/L — CITY OF CLYDE · 3,820 people · 2025 | 3/3 | UCMR-5 |
| Pfhpa | 0.0087 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025 | 3/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: POTOSI WSC · 7,413 people · 2024
Highest in the ZIP: 0.0068 mg/L — CITY OF CLYDE · 3,820 people · 2025 | 3/3 | LCR |
| PFOA | 0.0067 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025 | 3/3 | UCMR-5 |
| 6:2 Fts | 0.0062 µg/L No EPA limit set Highest in the ZIP: CITY OF CLYDE · 3,820 people · 2025 | 1/3 | UCMR-5 |
| PFBS | 0.0061 µg/L No EPA limit set Main supplier: POTOSI WSC · 7,413 people · 2025
Highest in the ZIP: 0.0062 µg/L — CITY OF CLYDE · 3,820 people · 2025 | 3/3 | UCMR-5 |
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 79510
| Supplier | State | Population served |
|---|---|---|
| POTOSI WSC | TX | 7,413 |
| EULA WSC | TX | 3,918 |
| CITY OF CLYDE | TX | 3,820 |
Frequently asked questions about ZIP 79510 tap water
Is the tap water in ZIP 79510 safe to drink?
EPA testing detected 36 contaminants across the water suppliers serving ZIP 79510. 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 79510?
3 public water suppliers report EPA drinking-water monitoring for ZIP 79510. Each is listed above with its population served.
What contaminants are in ZIP 79510's water?
EPA monitoring detected Nitrate-Nitrite, Nitrite, Nitrate, Copper, Fluoride, and others across this ZIP's suppliers. The full list with levels and sources is above.