What was found in ZIP 78659
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 | 812.5 µg/L 20% of the EPA limit 4000 µg/L Main supplier: AQUA WSC · 86,325 people · 2018 | 2/2 | SYR4 |
| Copper | 254.7 µg/L 20% of the EPA limit 1300 µg/L Main supplier: AQUA WSC · 86,325 people · 2017
Highest in the ZIP: 361 µg/L — LEE COUNTY WSC · 14,670 people · 2018 | 2/2 | SYR4 |
| Nitrate | 170 µg/L 1.7% of the EPA limit 10000 µg/L Main supplier: AQUA WSC · 86,325 people · 2019
Highest in the ZIP: 312.5 µg/L — LEE COUNTY WSC · 14,670 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 164 µg/L 1.6% of the EPA limit 10000 µg/L Main supplier: AQUA WSC · 86,325 people · 2019
Highest in the ZIP: 208 µg/L — LEE COUNTY WSC · 14,670 people · 2019 | 2/2 | SYR4 |
| Barium | 137.5 µg/L 6.9% of the EPA limit 2000 µg/L Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Lithium | 83 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2024
Highest in the ZIP: 85.2 µg/L — LEE COUNTY WSC · 14,670 people · 2024 | 2/2 | UCMR-5 |
| TTHM | 79.5 µg/L 99% of the EPA limit 80 µg/L Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Cyanide | 77.5 µg/L 39% of the EPA limit 200 µg/L Highest in the ZIP: LEE COUNTY WSC · 14,670 people · 2019 | 1/2 | SYR4 |
| Nitrite | 45 µg/L 4.5% of the EPA limit 1000 µg/L Highest in the ZIP: LEE COUNTY WSC · 14,670 people · 2019 | 1/2 | SYR4 |
| Bromoform | 39.3 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 27.79 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 14.885 µg/L 25% of the EPA limit 60 µg/L Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 13.065 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 6.62 pCi/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2017
Highest in the ZIP: 11.58 pCi/L — LEE COUNTY WSC · 14,670 people · 2019 | 2/2 | SYR4 |
| Chloroform | 9.44 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 9.295 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Lead | 6.441 µg/L 43% of the EPA limit 15 µg/L Main supplier: AQUA WSC · 86,325 people · 2017
Highest in the ZIP: 7.692 µg/L — LEE COUNTY WSC · 14,670 people · 2018 | 2/2 | SYR4 |
| Dichloroacetic Acid | 6.21 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.8 pCi/L 19% of the EPA limit 15 pCi/L Main supplier: AQUA WSC · 86,325 people · 2017
Highest in the ZIP: 6.2 pCi/L — LEE COUNTY WSC · 14,670 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 5.86 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 5.125 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 2/2 | SYR4 |
| Selenium | 3.7 µg/L 7.4% of the EPA limit 50 µg/L Main supplier: AQUA WSC · 86,325 people · 2019
Highest in the ZIP: 4.3 µg/L — LEE COUNTY WSC · 14,670 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 3.8 pCi/L 76% of the EPA limit 5 pCi/L Main supplier: AQUA WSC · 86,325 people · 2017 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.805 µg/L No EPA limit set Main supplier: AQUA WSC · 86,325 people · 2019 | 1/2 | SYR4 |
| Xylenes, Total | 1.1 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: LEE COUNTY WSC · 14,670 people · 2019 | 1/2 | SYR4 |
| Arsenic | 0.9810 µg/L 9.8% of the EPA limit 10 µg/L Highest in the ZIP: LEE COUNTY WSC · 14,670 people · 2019 | 1/2 | SYR4 |
| Vinyl Chloride | 0.8900 µg/L 45% of the EPA limit 2 µg/L Main supplier: AQUA WSC · 86,325 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.8100 µg/L 14% of the EPA limit 6 µg/L Main supplier: AQUA WSC · 86,325 people · 2019 | 1/2 | SYR4 |
| Toluene | 0.5000 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the ZIP: LEE COUNTY WSC · 14,670 people · 2019 | 1/2 | SYR4 |
| Benzo(A)Pyrene | 0.0200 µg/L 10% of the EPA limit 0.2000 µg/L Highest in the ZIP: LEE COUNTY WSC · 14,670 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L Main supplier: AQUA WSC · 86,325 people · 2025
Highest in the ZIP: 0.0032 mg/L — LEE COUNTY WSC · 14,670 people · 2024 | 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 78659
| Supplier | State | Population served |
|---|---|---|
| AQUA WSC | TX | 86,325 |
| LEE COUNTY WSC | TX | 14,670 |
Frequently asked questions about ZIP 78659 tap water
Is the tap water in ZIP 78659 safe to drink?
EPA testing detected 31 contaminants across the water suppliers serving ZIP 78659. 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 78659?
2 public water suppliers report EPA drinking-water monitoring for ZIP 78659. Each is listed above with its population served.
What contaminants are in ZIP 78659's water?
EPA monitoring detected Fluoride, Copper, Nitrate, Nitrate-Nitrite, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.