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Tap water quality report

Wilton, IA

EPA monitoring detected 16 contaminants across the 1 water supplier serving Wilton. 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
2,924
people served
16
contaminants found
Iowa rankings Lead in Iowa PFAS in Iowa

What was found in Wilton'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
1000 µg/L 10%
of the EPA limit 10000 µg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Fluoride
858 µg/L 21%
of the EPA limit 4000 µg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Barium
268 µg/L 13%
of the EPA limit 2000 µg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2012
1/1 SYR4
Copper
226.7 µg/L 17%
of the EPA limit 1300 µg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2017
1/1 SYR4
Total Haloacetic Acids (HAA5)
25.485 µg/L 42%
of the EPA limit 60 µg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
TTHM
19.66 µg/L 25%
of the EPA limit 80 µg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Monochloroacetic Acid
18.327 µg/L
No EPA limit set
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Chloroform
10.725 µg/L
No EPA limit set
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Lead
8.44 µg/L 56%
of the EPA limit 15 µg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2017
1/1 SYR4
Bromodichloromethane
5.881 µg/L
No EPA limit set
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Dichloroacetic Acid
4.154 µg/L
No EPA limit set
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Dibromochloromethane
3.312 µg/L
No EPA limit set
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Trichloroacetic Acid
3.152 µg/L
No EPA limit set
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
1.73 pCi/L 35%
of the EPA limit 5 pCi/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2018
1/1 SYR4
Dibromoacetic Acid
0.9950 µg/L
No EPA limit set
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2019
1/1 SYR4
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
Main supplier: WILTON WATER SUPPLY · 2,924 people · 2023
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 Wilton

SupplierPopulation served
WILTON WATER SUPPLY 2,924

Frequently asked questions about Wilton tap water

Is Wilton tap water safe to drink?

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

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

What contaminants are in Wilton's water?

The contaminants EPA monitoring detected in Wilton include Nitrate, Fluoride, Barium, Copper, Total Haloacetic Acids (HAA5). 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.