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Tap water quality report

Harrison, OH

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Harrison. 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
11,845
people served
18
contaminants found
Ohio rankings Lead in Ohio PFAS in Ohio

What was found in Harrison'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
Nitrate
1950 µg/L 20%
of the EPA limit 10000 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
1/2 SYR4
Nitrate-Nitrite
1631.5 µg/L 16%
of the EPA limit 10000 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
1/2 SYR4
Copper
1390 µg/L 107%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Fluoride
964 µg/L 24%
of the EPA limit 4000 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2018
1/2 SYR4
Barium
67.09 µg/L 3.4%
of the EPA limit 2000 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2018
1/2 SYR4
TTHM
35.09 µg/L 44%
of the EPA limit 80 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Lead
24.78 µg/L 165%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Chloroform
13.605 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
Highest in the city: 15.635 µg/L — TWIN RIVERS WATER CORPORATION · 245 people · 2019
2/2 SYR4
Bromodichloromethane
11.445 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
9.2 µg/L 15%
of the EPA limit 60 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Dibromochloromethane
8.97 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Dichloroacetic Acid
4.3 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Trichloroacetic Acid
3.475 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Dibromoacetic Acid
3.32 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Monobromoacetic Acid
2.755 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
1/2 SYR4
Bromoform
2.624 µg/L
No EPA limit set
Main supplier: HARRISON CITY PWS · 11,600 people · 2019
2/2 SYR4
Mercury
0.5000 µg/L 25%
of the EPA limit 2 µg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2018
1/2 SYR4
Lead
0.00070 mg/L 4.7%
of the EPA limit 0.0150 mg/L
Main supplier: HARRISON CITY PWS · 11,600 people · 2025
Highest in the city: 0.0030 mg/L — TWIN RIVERS WATER CORPORATION · 245 people · 2025
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 Harrison

SupplierPopulation served
HARRISON CITY PWS 11,600
TWIN RIVERS WATER CORPORATION 245

Frequently asked questions about Harrison tap water

Is Harrison tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Harrison. 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 Harrison?

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

What contaminants are in Harrison's water?

The contaminants EPA monitoring detected in Harrison 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.