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Tap water quality report

Blacklick, OH

EPA monitoring detected 19 contaminants across the 1 water supplier serving Blacklick. 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.

1
water supplier
11,294
people served
19
contaminants found
Ohio rankings Lead in Ohio PFAS in Ohio

What was found in Blacklick'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
1108.5 µg/L 28%
of the EPA limit 4000 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Nitrate
580 µg/L 5.8%
of the EPA limit 10000 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Nitrate-Nitrite
532 µg/L 5.3%
of the EPA limit 10000 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Copper
363.4 µg/L 28%
of the EPA limit 1300 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
TTHM
52.96 µg/L 66%
of the EPA limit 80 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Barium
27.2 µg/L 1.4%
of the EPA limit 2000 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2017
1/1 SYR4
Lead
25.7 µg/L 171%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Lithium
20.1 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2024
1/1 UCMR-5
Bromodichloromethane
18.88 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Chloroform
17.03 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Dibromochloromethane
15.29 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
8.1 µg/L 13%
of the EPA limit 60 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Bromoform
4.11 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Dichloroacetic Acid
3.44 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Trichloroacetic Acid
2.58 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.455 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.3 µg/L
No EPA limit set
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2019
1/1 SYR4
Mercury
0.5000 µg/L 25%
of the EPA limit 2 µg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2017
1/1 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: JEFFERSON WATER AND SEWER DISTRICT PWS · 11,294 people · 2025
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 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 Blacklick

SupplierPopulation served
JEFFERSON WATER AND SEWER DISTRICT PWS 11,294

Frequently asked questions about Blacklick tap water

Is Blacklick tap water safe to drink?

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

1 public water supplier report drinking-water monitoring for Blacklick, Ohio to the EPA. Each is listed above with its population served.

What contaminants are in Blacklick's water?

The contaminants EPA monitoring detected in Blacklick 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.