What was found in Massillon'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 | 1083 µg/L 27% of the EPA limit 4000 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| TTHM | 30.09 µg/L 38% of the EPA limit 80 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Copper | 22.15 µg/L 1.7% of the EPA limit 1300 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2018 | 1/1 | SYR4 |
| Barium | 13.85 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 11.81 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Lithium | 11.4 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2023 | 1/1 | UCMR-5 |
| Bromoform | 8.85 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.1 µg/L 12% of the EPA limit 60 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 7 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 4.4 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 3.8 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Chloroform | 3.46 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.2 µg/L 22% of the EPA limit 10 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 2.1 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Lead | 2.1 µg/L 14% of the EPA limit 15 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Chromium | 1.1 µg/L 1.1% of the EPA limit 100 µg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.03 pCi/L 21% of the EPA limit 5 pCi/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2016 | 1/1 | SYR4 |
| Pfhxa | 0.0031 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0030 µg/L No EPA limit set Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: AQUA OHIO - MASSILLON PWS · 95,636 people · 2024 | 1/1 | LCR |
Water suppliers serving Massillon
| Supplier | Population served |
|---|---|
| AQUA OHIO - MASSILLON PWS | 95,636 |
Frequently asked questions about Massillon tap water
Is Massillon tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Massillon. 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 Massillon?
1 public water supplier report drinking-water monitoring for Massillon, Ohio to the EPA. Each is listed above with its population served.
What contaminants are in Massillon's water?
The contaminants EPA monitoring detected in Massillon include Fluoride, TTHM, Copper, Barium, 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.