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Tap water quality report

Massillon, OH

EPA monitoring detected 20 contaminants across the 1 water supplier serving Massillon. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
95,636
people served
20
contaminants found
Ohio rankings Lead in Ohio PFAS in Ohio

What was found in Massillon's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
 1/1 SYR4
TTHM
45.9 µg/L 57%
of the EPA limit 80 µg/L
 1/1 SYR4
Copper
38 µg/L 2.9%
of the EPA limit 1300 µg/L
 1/1 SYR4
Dibromochloromethane
18 µg/L
No EPA limit set
 1/1 SYR4
Barium
14 µg/L 0.7%
of the EPA limit 2000 µg/L
 1/1 SYR4
Bromodichloromethane
11.5 µg/L
No EPA limit set
 1/1 SYR4
Lithium
11.4 µg/L
No EPA limit set
 1/1 UCMR-5
Bromoform
11.1 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
8.5 µg/L 14%
of the EPA limit 60 µg/L
 1/1 SYR4
Chloroform
5.3 µg/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
5.1 µg/L
No EPA limit set
 1/1 SYR4
Monochloroacetic Acid
5 µg/L
No EPA limit set
 1/1 SYR4
Arsenic
2.2 µg/L 22%
of the EPA limit 10 µg/L
 1/1 SYR4
Dichloroacetic Acid
2.1 µg/L
No EPA limit set
 1/1 SYR4
Lead
2.1 µg/L 14%
of the EPA limit 15 µg/L
 1/1 SYR4
Chromium
1.1 µg/L 1.1%
of the EPA limit 100 µg/L
 1/1 SYR4
Combined Radium (-226 And -228)
1.03 pCi/L 21%
of the EPA limit 5 pCi/L
 1/1 SYR4
Pfhxa
0.0031 µg/L
No EPA limit set
 1/1 UCMR-5
Pfpea
0.0030 µg/L
No EPA limit set
 1/1 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 1/1 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 single worst sample on record — 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 Massillon

SupplierPopulation 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, Dibromochloromethane, Barium. The full list, with the highest level found 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.