What was found in Coraopolis'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 | 1550 µg/L 16% of the EPA limit 10000 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Copper | 606.9 µg/L 47% of the EPA limit 1300 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Fluoride | 345 µg/L 8.6% of the EPA limit 4000 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2018 | 1/1 | SYR4 |
| TTHM | 68.53 µg/L 86% of the EPA limit 80 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 25.15 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 19.79 µg/L 33% of the EPA limit 60 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 19.09 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Bromoform | 13.89 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Lead | 13 µg/L 87% of the EPA limit 15 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Chloroform | 9.48 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 6.919 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| 1,1,1-Trichloroethane | 6.13 µg/L 3.1% of the EPA limit 200 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 5.88 µg/L 8.4% of the EPA limit 70 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 4.88 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 4.422 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 1.61 µg/L 32% of the EPA limit 5 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 1.5975 µg/L 23% of the EPA limit 7 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 1.0595 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| trans-1,2-Dichloroethylene | 0.5610 µg/L 0.6% of the EPA limit 100 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Carbon Tetrachloride | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0188 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2023 | 1/1 | UCMR-5 |
| PFBS | 0.0146 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2023 | 1/1 | UCMR-5 |
| PFHXS | 0.0126 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2023 | 1/1 | UCMR-5 |
| Pfba | 0.0062 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2023 | 1/1 | UCMR-5 |
| PFOA | 0.0052 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0043 mg/L 29% of the EPA limit 0.0150 mg/L Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2025 | 1/1 | LCR |
| Pfhxa | 0.0032 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0031 µg/L No EPA limit set Main supplier: CORAOPOLIS WATER & SEWER AUTH · 5,804 people · 2023 | 1/1 | 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.
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 Coraopolis
| Supplier | Population served |
|---|---|
| CORAOPOLIS WATER & SEWER AUTH | 5,804 |
Frequently asked questions about Coraopolis tap water
Is Coraopolis tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Coraopolis. 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 Coraopolis?
1 public water supplier report drinking-water monitoring for Coraopolis, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Coraopolis's water?
The contaminants EPA monitoring detected in Coraopolis include Nitrate, Copper, Fluoride, TTHM, Dibromochloromethane. 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.