Is Mansfield, OH Tap Water Safe? Quality & Contaminants

What was found in Mansfield'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	697 µg/L 7% of the EPA limit 10000 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019 Highest in the city: 4600 µg/L — PEYTON COMMUNITY WELL · 149 people · 2018	12/17	SYR4
Nitrate-Nitrite	689 µg/L 6.9% of the EPA limit 10000 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019 Highest in the city: 4390 µg/L — PEYTON COMMUNITY WELL · 149 people · 2019	12/17	SYR4
Copper	596.5 µg/L 46% of the EPA limit 1300 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019 Highest in the city: 1003 µg/L — WALNUT HILLS WATER ASSOCIATION · 583 people · 2019	17/17	SYR4
Fluoride	179.85 µg/L 4.5% of the EPA limit 4000 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019 Highest in the city: 355.9 µg/L — DAYSPRING ASSISTED LIVING AND CARE · 95 people · 2019	11/17	SYR4
Barium	95.1 µg/L 4.8% of the EPA limit 2000 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019 Highest in the city: 108.3 µg/L — COLONIAL HILLS MHP · 185 people · 2019	12/17	SYR4
TTHM	89.9 µg/L 112% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019	9/17	SYR4
Chloroform	74.315 µg/L No EPA limit set Main supplier: MANSFIELD CITY · 51,000 people · 2019	12/17	SYR4
Total Haloacetic Acids (HAA5)	56.305 µg/L 94% of the EPA limit 60 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019	3/17	SYR4
Lead	15.35 µg/L 102% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019 Highest in the city: 28.24 µg/L — COLONIAL HILLS MHP · 185 people · 2019	12/17	SYR4
Dichloroacetic Acid	28.025 µg/L No EPA limit set Main supplier: MANSFIELD CITY · 51,000 people · 2019	7/17	SYR4
Trichloroacetic Acid	27.6 µg/L No EPA limit set Main supplier: MANSFIELD CITY · 51,000 people · 2019	2/17	SYR4
Bromodichloromethane	14.315 µg/L No EPA limit set Main supplier: MANSFIELD CITY · 51,000 people · 2019	11/17	SYR4
Monochloroacetic Acid	4.3 µg/L No EPA limit set Main supplier: MANSFIELD CITY · 51,000 people · 2019	1/17	SYR4
Dibromoacetic Acid	4.02 µg/L No EPA limit set Main supplier: MANSFIELD CITY · 51,000 people · 2019	1/17	SYR4
Dibromochloromethane	2.9 µg/L No EPA limit set Main supplier: MANSFIELD CITY · 51,000 people · 2019	11/17	SYR4
Bromoform	1.437 µg/L No EPA limit set Highest in the city: ARBORS AT MIFFLIN · 172 people · 2019	6/17	SYR4
Atrazine	0.1100 µg/L 3.7% of the EPA limit 3 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019	1/17	SYR4
Simazine	0.0650 µg/L 1.6% of the EPA limit 4 µg/L Main supplier: MANSFIELD CITY · 51,000 people · 2019	1/17	SYR4
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: MANSFIELD CITY · 51,000 people · 2025 Highest in the city: 0.0055 mg/L — HANLEY ACRES WATER ASSOCIATION · 85 people · 2025	17/17	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 Mansfield

Supplier	Population served
MANSFIELD CITY	51,000
MADISON WATER DISTRICT	2,050
WALNUT HILLS WATER ASSOCIATION	583
SHELLY ACRES WATER ASSOCIATION	454
EXPRESSVIEW COMM WATER ASSOCIATION	300
LEXVIEW ALLOTMENT	225
WILLOW PARK WATER ASSOCIATION	200
COLONIAL HILLS MHP	185
HEATHERWOOD COMMUNITY WATER ASSOC PWS	177
ARBORS AT MIFFLIN	172
HILLSDALE COMMUNITY WATER ASSOCIATION PW	160
SOUTHERN ESTATES WATER ASSOC PWS	150
PEYTON COMMUNITY WELL	149
MEADOWOOD WATER ASSOCIATION	140
HANLEY VILLAGE WATER ASSOCIATION	95
DAYSPRING ASSISTED LIVING AND CARE	95
HANLEY ACRES WATER ASSOCIATION	85

Frequently asked questions about Mansfield tap water

Is Mansfield tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Mansfield. 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 Mansfield?

17 public water suppliers report drinking-water monitoring for Mansfield, Ohio to the EPA. Each is listed above with its population served.

What contaminants are in Mansfield's water?

The contaminants EPA monitoring detected in Mansfield include Nitrate, Nitrate-Nitrite, Copper, Fluoride, 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.