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Tap water quality report

Ashland, WI

EPA monitoring detected 16 contaminants across the 1 water supplier serving Ashland. 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
8,000
people served
16
contaminants found
Wisconsin rankings Lead in Wisconsin PFAS in Wisconsin

What was found in Ashland'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
738.5 µg/L 18%
of the EPA limit 4000 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Nitrate-Nitrite
470 µg/L 4.7%
of the EPA limit 10000 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Copper
240 µg/L 18%
of the EPA limit 1300 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
101.975 µg/L 170%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
TTHM
101.945 µg/L 127%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Chloroform
95 µg/L
No EPA limit set
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Cyanide
76 µg/L 38%
of the EPA limit 200 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2017
1/1 SYR4
Trichloroacetic Acid
64 µg/L
No EPA limit set
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Dichloroacetic Acid
38.4 µg/L
No EPA limit set
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Lead
16 µg/L 107%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Barium
13 µg/L 0.7%
of the EPA limit 2000 µg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Bromodichloromethane
7.2 µg/L
No EPA limit set
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Monochloroacetic Acid
1.99 µg/L
No EPA limit set
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
0.8000 pCi/L 16%
of the EPA limit 5 pCi/L
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2014
1/1 SYR4
Dibromochloromethane
0.7975 µg/L
No EPA limit set
Main supplier: ASHLAND WATER UTILITY · 8,000 people · 2019
1/1 SYR4
Lead
0.0065 mg/L 43%
of the EPA limit 0.0150 mg/L
Main supplier: ASHLAND WATER UTILITY · 8,000 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 Ashland

SupplierPopulation served
ASHLAND WATER UTILITY 8,000

Frequently asked questions about Ashland tap water

Is Ashland tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Ashland. 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 Ashland?

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

What contaminants are in Ashland's water?

The contaminants EPA monitoring detected in Ashland include Fluoride, Nitrate-Nitrite, Copper, Total Haloacetic Acids (HAA5), 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.