What was found in ZIP 45377
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 | 1567.5 µg/L 16% of the EPA limit 10000 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 1472 µg/L 15% of the EPA limit 10000 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 2/3 | SYR4 |
| Fluoride | 977.5 µg/L 24% of the EPA limit 4000 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 1093 µg/L — NAWA · 29,974 people · 2018 | 3/3 | SYR4 |
| Copper | 68.23 µg/L 5.2% of the EPA limit 1300 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2017
Highest in the ZIP: 528.95 µg/L — NAWA · 29,974 people · 2019 | 3/3 | SYR4 |
| Barium | 67.1 µg/L 3.4% of the EPA limit 2000 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 239 µg/L — UNION CITY PWS · 7,000 people · 2018 | 3/3 | SYR4 |
| Nitrite | 186 µg/L 19% of the EPA limit 1000 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 1/3 | SYR4 |
| TTHM | 36.7688 µg/L 46% of the EPA limit 80 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 39.474 µg/L — NAWA · 29,974 people · 2019 | 3/3 | SYR4 |
| Chloroform | 11.7683 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 28.812 µg/L — NAWA · 29,974 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 17.2 pCi/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 1/3 | SYR4 |
| Lead | 11.2 µg/L 75% of the EPA limit 15 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2017
Highest in the ZIP: 12.198 µg/L — NAWA · 29,974 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 10.8745 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.6065 µg/L 14% of the EPA limit 60 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 10.172 µg/L — UNION CITY PWS · 7,000 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3.65 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 9.793 µg/L — UNION CITY PWS · 7,000 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 9.35075 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 4.2 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 5.1752 µg/L — NAWA · 29,974 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 1.51425 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019
Highest in the ZIP: 4.433 µg/L — NAWA · 29,974 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 3.5025 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 2/3 | SYR4 |
| Bromoform | 2.747 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 2.38 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.3 pCi/L 26% of the EPA limit 5 pCi/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 1/3 | SYR4 |
| Trichloroethylene | 1.063 µg/L 21% of the EPA limit 5 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 1/3 | SYR4 |
| cis-1,2-Dichloroethylene | 0.6665 µg/L 1% of the EPA limit 70 µg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2019 | 1/3 | SYR4 |
| Lead | 0.4700 mg/L 3133% above the EPA limit of 0.0150 mg/L Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2026 | 3/3 | LCR |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2023
Highest in the ZIP: 0.0200 µg/L — UNION CITY PWS · 7,000 people · 2025 | 2/3 | UCMR-5 |
| PFOS | 0.0100 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2023 | 1/3 | UCMR-5 |
| PFHXS | 0.0098 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2023 | 1/3 | UCMR-5 |
| Pfhxa | 0.0044 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2023
Highest in the ZIP: 0.0063 µg/L — UNION CITY PWS · 7,000 people · 2025 | 2/3 | UCMR-5 |
| Pfpea | 0.0046 µg/L No EPA limit set Main supplier: DAYTON PUBLIC WATER SYSTEM · 141,407 people · 2023
Highest in the ZIP: 0.0054 µg/L — UNION CITY PWS · 7,000 people · 2025 | 2/3 | UCMR-5 |
| PFOA | 0.0048 µg/L No EPA limit set Highest in the ZIP: UNION CITY PWS · 7,000 people · 2025 | 1/3 | UCMR-5 |
| Pfhpa | 0.0034 µg/L No EPA limit set Highest in the ZIP: UNION CITY PWS · 7,000 people · 2025 | 1/3 | 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 45377
| Supplier | State | Population served |
|---|---|---|
| DAYTON PUBLIC WATER SYSTEM | OH | 141,407 |
| NAWA | OH | 29,974 |
| UNION CITY PWS | OH | 7,000 |
Frequently asked questions about ZIP 45377 tap water
Is the tap water in ZIP 45377 safe to drink?
EPA testing detected 30 contaminants across the water suppliers serving ZIP 45377. 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 45377?
3 public water suppliers report EPA drinking-water monitoring for ZIP 45377. Each is listed above with its population served.
What contaminants are in ZIP 45377'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.