What was found in Conneaut Lake'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 |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | 11.5 µg/L 19% of the EPA limit 60 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019
Highest in the city: 373.599 µg/L — TITUSVILLE ESTATES · 44 people · 2019 | 4/4 | SYR4 |
| Fluoride | 100 µg/L 2.5% of the EPA limit 4000 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2012
Highest in the city: 298.5 µg/L — HARDWOOD ESTATES · 61 people · 2018 | 4/4 | SYR4 |
| Copper | 125.5 µg/L 9.7% of the EPA limit 1300 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019
Highest in the city: 293.25 µg/L — ELDERBERRY MHP · 60 people · 2019 | 4/4 | SYR4 |
| Barium | 270 µg/L 14% of the EPA limit 2000 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2012 | 3/4 | SYR4 |
| Nitrate | 180 µg/L 1.8% of the EPA limit 10000 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019
Highest in the city: 210 µg/L — HARDWOOD ESTATES · 61 people · 2019 | 4/4 | SYR4 |
| TTHM | 25.18 µg/L 31% of the EPA limit 80 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019
Highest in the city: 25.7 µg/L — HARDWOOD ESTATES · 61 people · 2018 | 4/4 | SYR4 |
| Chloroform | 9.7105 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019
Highest in the city: 13.51 µg/L — HARDWOOD ESTATES · 61 people · 2018 | 2/4 | SYR4 |
| Bromodichloromethane | 9.946 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019 | 3/4 | SYR4 |
| Dibromochloromethane | 9.6895 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019 | 4/4 | SYR4 |
| Lithium | 9.6 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2023 | 1/4 | UCMR-5 |
| Cyanide | 9 µg/L 4.5% of the EPA limit 200 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2012 | 1/4 | SYR4 |
| Lead | 6.125 µg/L 41% of the EPA limit 15 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019
Highest in the city: 6.59 µg/L — HARDWOOD ESTATES · 61 people · 2019 | 4/4 | SYR4 |
| Arsenic | 5.7565 µg/L 58% of the EPA limit 10 µg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019 | 2/4 | SYR4 |
| Dichloroacetic Acid | 5.45 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 2.34 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019 | 2/4 | SYR4 |
| Trichloroacetic Acid | 2.32 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019 | 2/4 | SYR4 |
| Bromoform | 1.735 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019
Highest in the city: 2.019 µg/L — TITUSVILLE ESTATES · 44 people · 2019 | 3/4 | SYR4 |
| Monochloroacetic Acid | 1.84 µg/L No EPA limit set Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2019 | 2/4 | SYR4 |
| Dichloromethane | 0.7470 µg/L 15% of the EPA limit 5 µg/L Highest in the city: HARDWOOD ESTATES · 61 people · 2019 | 1/4 | SYR4 |
| Antimony, Total | 0.7000 µg/L 12% of the EPA limit 6 µg/L Highest in the city: ELDERBERRY MHP · 60 people · 2018 | 1/4 | SYR4 |
| Lead | 0.0290 mg/L 193% above the EPA limit of 0.0150 mg/L Main supplier: CONNEAUT LAKE BOROUGH WTP · 870 people · 2001
Highest in the city: 0.6400 mg/L — ELDERBERRY MHP · 60 people · 2025 | 4/4 | LCR |
| Toluene | 0.6400 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: TITUSVILLE ESTATES · 44 people · 2019 | 1/4 | SYR4 |
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 Conneaut Lake
| Supplier | Population served |
|---|---|
| CONNEAUT LAKE BOROUGH WTP | 870 |
| HARDWOOD ESTATES | 61 |
| ELDERBERRY MHP | 60 |
| TITUSVILLE ESTATES | 44 |
Frequently asked questions about Conneaut Lake tap water
Is Conneaut Lake tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Conneaut Lake. 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 Conneaut Lake?
4 public water suppliers report drinking-water monitoring for Conneaut Lake, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Conneaut Lake's water?
The contaminants EPA monitoring detected in Conneaut Lake include Total Haloacetic Acids (HAA5), Fluoride, Copper, Barium, Nitrate. 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.