What was found in Canton'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 | 1100 µg/L 28% of the EPA limit 4000 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 3/4 | SYR4 |
| Copper | 416.5 µg/L 32% of the EPA limit 1300 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 4/4 | SYR4 |
| Nitrate | 310 µg/L 3.1% of the EPA limit 10000 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 2/4 | SYR4 |
| Barium | 122 µg/L 6.1% of the EPA limit 2000 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019
Highest in the city: 300 µg/L — SCENIC CREEK APARTMENTS PWS · 80 people · 2019 | 3/4 | SYR4 |
| Nitrate-Nitrite | 286 µg/L 2.9% of the EPA limit 10000 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 2/4 | SYR4 |
| TTHM | 43.12 µg/L 54% of the EPA limit 80 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019
Highest in the city: 52.15 µg/L — STARK COUNTY WATER DISTRICT · 6,690 people · 2019 | 4/4 | SYR4 |
| Lead | 12.525 µg/L 84% of the EPA limit 15 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019
Highest in the city: 22.7 µg/L — SCENIC CREEK APARTMENTS PWS · 80 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 10.83 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019
Highest in the city: 18.65 µg/L — STARK COUNTY WATER DISTRICT · 6,690 people · 2019 | 4/4 | SYR4 |
| Chloroform | 17.4 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 4/4 | SYR4 |
| Lithium | 11.5 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2025
Highest in the city: 14.7 µg/L — STARK COUNTY WATER DISTRICT · 6,690 people · 2023 | 2/4 | UCMR-5 |
| Bromodichloromethane | 14.32 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 4/4 | SYR4 |
| Bromoform | 3.505 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019
Highest in the city: 14.2 µg/L — STARK COUNTY WATER DISTRICT · 6,690 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 12.805 µg/L 21% of the EPA limit 60 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 7.525 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 3.5 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019
Highest in the city: 5.4 µg/L — STARK COUNTY WATER DISTRICT · 6,690 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 5.4 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 3/4 | SYR4 |
| Gross Beta Particle Activity | 4 pCi/L No EPA limit set Highest in the city: SCENIC CREEK APARTMENTS PWS · 80 people · 2015 | 1/4 | SYR4 |
| Trichloroacetic Acid | 3.6 µg/L No EPA limit set Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2019 | 2/4 | SYR4 |
| Simazine | 0.0530 µg/L 1.3% of the EPA limit 4 µg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2018
Highest in the city: 0.0540 µg/L — SCENIC CREEK APARTMENTS PWS · 80 people · 2018 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 0.0200 pCi/L 0.4% of the EPA limit 5 pCi/L Highest in the city: SCENIC CREEK APARTMENTS PWS · 80 people · 2015 | 1/4 | SYR4 |
| Lead | 0.0080 mg/L 53% of the EPA limit 0.0150 mg/L Main supplier: CANTON PUBLIC WATER SYSTEM · 107,113 people · 2025 | 4/4 | 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 Canton
| Supplier | Population served |
|---|---|
| CANTON PUBLIC WATER SYSTEM | 107,113 |
| STARK COUNTY WATER DISTRICT | 6,690 |
| SCENIC CREEK APARTMENTS PWS | 80 |
| CASTLEBAR APARTMENTS PWS | 50 |
Frequently asked questions about Canton tap water
Is Canton tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Canton. 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 Canton?
4 public water suppliers report drinking-water monitoring for Canton, Ohio to the EPA. Each is listed above with its population served.
What contaminants are in Canton's water?
The contaminants EPA monitoring detected in Canton include Fluoride, Copper, Nitrate, Barium, Nitrate-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.