What was found in Port Clinton's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 3440.5 µg/L 34% of the EPA limit 10000 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 1/3 | SYR4 |
| Nitrate | 3440 µg/L 34% of the EPA limit 10000 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 1/3 | SYR4 |
| Fluoride | 1098 µg/L 27% of the EPA limit 4000 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019
Highest in the city: 1189 µg/L — GREENWOOD MOBILE HOME PARK · 77 people · 2019 | 2/3 | SYR4 |
| Copper | 238.3 µg/L 18% of the EPA limit 1300 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 3/3 | SYR4 |
| Nitrite | 100 µg/L 10% of the EPA limit 1000 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 1/3 | SYR4 |
| TTHM | 93.02 µg/L 116% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019
Highest in the city: 96.3 µg/L — PORT CLINTON CITY · 6,500 people · 2019 | 3/3 | SYR4 |
| Chloroform | 75.1 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 3/3 | SYR4 |
| Lead | 48.75 µg/L 325% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 3/3 | SYR4 |
| Barium | 27 µg/L 1.4% of the EPA limit 2000 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019
Highest in the city: 46.8 µg/L — GREENWOOD MOBILE HOME PARK · 77 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 42.92 µg/L 72% of the EPA limit 60 µg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 23.55 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 17.9 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 16.7 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019
Highest in the city: 16.85 µg/L — PORT CLINTON CITY · 6,500 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 9.03 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 5.44 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019
Highest in the city: 7.7 µg/L — PORT CLINTON CITY · 6,500 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 3.2 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019
Highest in the city: 3.43 µg/L — PORT CLINTON CITY · 6,500 people · 2019 | 2/3 | SYR4 |
| Bromoform | 1.555 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2019
Highest in the city: 1.8 µg/L — PORT CLINTON CITY · 6,500 people · 2019 | 2/3 | SYR4 |
| Pfba | 0.0073 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2023 | 1/3 | UCMR-5 |
| Pfhxa | 0.0066 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2023 | 1/3 | UCMR-5 |
| Pfpea | 0.0045 µg/L No EPA limit set Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2023 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: OTTAWA COUNTY REGIONAL WATER DISTRICT · 20,428 people · 2025
Highest in the city: 0.0014 mg/L — GREENWOOD MOBILE HOME PARK · 77 people · 2025 | 3/3 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Port Clinton
| Supplier | Population served |
|---|---|
| OTTAWA COUNTY REGIONAL WATER DISTRICT | 20,428 |
| PORT CLINTON CITY | 6,500 |
| GREENWOOD MOBILE HOME PARK | 77 |
Frequently asked questions about Port Clinton tap water
Is Port Clinton tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Port Clinton. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Port Clinton?
3 public water suppliers report drinking-water monitoring for Port Clinton, Ohio to the EPA. Each is listed above with its population served.
What contaminants are in Port Clinton's water?
The contaminants EPA monitoring detected in Port Clinton include Nitrate-Nitrite, Nitrate, Fluoride, Copper, Nitrite. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.