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Tap water quality report

Mentor, OH

EPA monitoring detected 20 contaminants across the 2 water suppliers serving Mentor. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
106,228
people served
20
contaminants found
Ohio rankings Lead in Ohio PFAS in Ohio

What was found in Mentor'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.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
1054 µg/L 26%
of the EPA limit 4000 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Nitrate
940 µg/L 9.4%
of the EPA limit 10000 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Nitrate-Nitrite
820 µg/L 8.2%
of the EPA limit 10000 µg/L
Highest in the city: PAINESVILLE CITY PWS · 31,728 people · 2019
1/2 SYR4
Copper
160 µg/L 12%
of the EPA limit 1300 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2017
Highest in the city: 200 µg/L — PAINESVILLE CITY PWS · 31,728 people · 2018
2/2 SYR4
TTHM
76.16 µg/L 95%
of the EPA limit 80 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Chloroform
54.28 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
44.6 µg/L 74%
of the EPA limit 60 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Trichloroacetic Acid
20.19 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
Highest in the city: 24.73 µg/L — PAINESVILLE CITY PWS · 31,728 people · 2019
2/2 SYR4
Barium
21.755 µg/L 1.1%
of the EPA limit 2000 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
Highest in the city: 24 µg/L — PAINESVILLE CITY PWS · 31,728 people · 2019
2/2 SYR4
Dichloroacetic Acid
23.165 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Bromodichloromethane
16.66 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Lead
8.095 µg/L 54%
of the EPA limit 15 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2017
Highest in the city: 13.3 µg/L — PAINESVILLE CITY PWS · 31,728 people · 2018
2/2 SYR4
Monochloroacetic Acid
8.55 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Dibromochloromethane
5.38 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
Highest in the city: 5.4 µg/L — PAINESVILLE CITY PWS · 31,728 people · 2019
2/2 SYR4
Chromium
3.945 µg/L 3.9%
of the EPA limit 100 µg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
1/2 SYR4
Gross Beta Particle Activity
2.24 pCi/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2015
1/2 SYR4
Dibromoacetic Acid
1.9 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
2/2 SYR4
Monobromoacetic Acid
1.3 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
1/2 SYR4
Bromoform
0.7000 µg/L
No EPA limit set
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2019
Highest in the city: 0.8000 µg/L — PAINESVILLE CITY PWS · 31,728 people · 2019
2/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: AQUA OHIO - MENTOR · 74,500 people · 2023
2/2 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 Mentor

SupplierPopulation served
AQUA OHIO - MENTOR 74,500
PAINESVILLE CITY PWS 31,728

Frequently asked questions about Mentor tap water

Is Mentor tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Mentor. 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 Mentor?

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

What contaminants are in Mentor's water?

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