What was found in ZIP 77535
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 | 277.5 µg/L 6.9% of the EPA limit 4000 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2018
Highest in the ZIP: 2555.5 µg/L — CITY OF MONT BELVIEU · 12,864 people · 2019 | 2/2 | SYR4 |
| Copper | 115.9 µg/L 8.9% of the EPA limit 1300 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019
Highest in the ZIP: 228.7 µg/L — CITY OF MONT BELVIEU · 12,864 people · 2019 | 2/2 | SYR4 |
| Barium | 196.9 µg/L 9.8% of the EPA limit 2000 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019 | 2/2 | SYR4 |
| Nitrate | 180 µg/L 1.8% of the EPA limit 10000 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 180 µg/L 1.8% of the EPA limit 10000 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019 | 2/2 | SYR4 |
| TTHM | 71.8 µg/L 90% of the EPA limit 80 µg/L Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 34.2 µg/L No EPA limit set Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 27.4 µg/L No EPA limit set Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Lithium | 16.5 µg/L No EPA limit set Main supplier: CITY OF DAYTON · 15,393 people · 2023
Highest in the ZIP: 26.7 µg/L — CITY OF MONT BELVIEU · 12,864 people · 2025 | 2/2 | UCMR-5 |
| Selenium | 22.71 µg/L 45% of the EPA limit 50 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019 | 1/2 | SYR4 |
| Lead | 16.628 µg/L 111% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019 | 2/2 | SYR4 |
| Chloroform | 16 µg/L No EPA limit set Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Bromoform | 15.98 µg/L No EPA limit set Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 15.62 µg/L 26% of the EPA limit 60 µg/L Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 7.94 µg/L No EPA limit set Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Arsenic | 3.17 µg/L 32% of the EPA limit 10 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019
Highest in the ZIP: 5.57 µg/L — CITY OF MONT BELVIEU · 12,864 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 4.8 µg/L No EPA limit set Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 4.58 µg/L No EPA limit set Highest in the ZIP: CITY OF MONT BELVIEU · 12,864 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 4.2 pCi/L 84% of the EPA limit 5 pCi/L Main supplier: CITY OF DAYTON · 15,393 people · 2017 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.9 pCi/L 19% of the EPA limit 15 pCi/L Main supplier: CITY OF DAYTON · 15,393 people · 2017 | 1/2 | SYR4 |
| Combined Uranium | 2.79 µg/L 9.3% of the EPA limit 30 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2017 | 1/2 | SYR4 |
| Xylenes, Total | 1.54 µg/L 0% of the EPA limit 10000 µg/L Main supplier: CITY OF DAYTON · 15,393 people · 2019 | 2/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF DAYTON · 15,393 people · 2025
Highest in the ZIP: 0.0025 mg/L — CITY OF MONT BELVIEU · 12,864 people · 2026 | 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 77535
| Supplier | State | Population served |
|---|---|---|
| CITY OF DAYTON | TX | 15,393 |
| CITY OF MONT BELVIEU | TX | 12,864 |
Frequently asked questions about ZIP 77535 tap water
Is the tap water in ZIP 77535 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 77535. 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 77535?
2 public water suppliers report EPA drinking-water monitoring for ZIP 77535. Each is listed above with its population served.
What contaminants are in ZIP 77535's water?
EPA monitoring detected Fluoride, Copper, Barium, Nitrate, Nitrate-Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.