What was found in Circleville'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 |
|---|---|---|---|
| Fluoride | 1167 µg/L 29% of the EPA limit 4000 µg/L Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019 | 2/3 | SYR4 |
| Copper | 940 µg/L 72% of the EPA limit 1300 µg/L Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019 | 3/3 | SYR4 |
| Nitrate | 200 µg/L 2% of the EPA limit 10000 µg/L Highest in the city: EARNHART HILL WATER DISTRICT PWS · 10,057 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 187.99999999999997 µg/L 1.9% of the EPA limit 10000 µg/L Highest in the city: EARNHART HILL WATER DISTRICT PWS · 10,057 people · 2019 | 1/3 | SYR4 |
| Barium | 155.7 µg/L 7.8% of the EPA limit 2000 µg/L Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019 | 2/3 | SYR4 |
| TTHM | 35.67 µg/L 45% of the EPA limit 80 µg/L Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 74.07000000000001 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Lead | 7.06 µg/L 47% of the EPA limit 15 µg/L Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 27.989999999999995 µg/L — EARNHART HILL WATER DISTRICT PWS · 10,057 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 9.4 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 26.349999999999998 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Chloroform | 12.094999999999999 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 21.169999999999998 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 12.489999999999998 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 19.759999999999998 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Bromoform | 2.0939999999999994 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 16.879999999999995 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Lithium | 10.9 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2024
Highest in the city: 14.3 µg/L — EARNHART HILL WATER DISTRICT PWS · 10,057 people · 2023 | 2/3 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 9.3 µg/L 16% of the EPA limit 60 µg/L Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 12.94 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 4.3 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 6.12 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 2.53 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019
Highest in the city: 5.58 µg/L — VILLAGE OF ORIENT · 128 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3.5 µg/L No EPA limit set Highest in the city: EARNHART HILL WATER DISTRICT PWS · 10,057 people · 2019 | 1/3 | SYR4 |
| Trichloroacetic Acid | 2.6899999999999995 µg/L No EPA limit set Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 1.6 µg/L No EPA limit set Highest in the city: EARNHART HILL WATER DISTRICT PWS · 10,057 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.4 pCi/L 28% of the EPA limit 5 pCi/L Highest in the city: EARNHART HILL WATER DISTRICT PWS · 10,057 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CIRCLEVILLE CITY PWS · 13,927 people · 2025
Highest in the city: 0.0048 mg/L — VILLAGE OF ORIENT · 128 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 Circleville
| Supplier | Population served |
|---|---|
| CIRCLEVILLE CITY PWS | 13,927 |
| EARNHART HILL WATER DISTRICT PWS | 10,057 |
| VILLAGE OF ORIENT | 128 |
Frequently asked questions about Circleville tap water
Is Circleville tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Circleville. 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 Circleville?
3 public water suppliers report drinking-water monitoring for Circleville, Ohio to the EPA. Each is listed above with its population served.
What contaminants are in Circleville's water?
The contaminants EPA monitoring detected in Circleville include Fluoride, Copper, Nitrate, Nitrate-Nitrite, Barium. 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.