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Tap water quality report

Webster City, IA

EPA monitoring detected 14 contaminants across the 1 water supplier serving Webster City. 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
7,825
people served
14
contaminants found
Iowa rankings Lead in Iowa PFAS in Iowa

What was found in Webster City'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
816.5 µg/L 8.2%
of the EPA limit 10000 µg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Fluoride
750 µg/L 19%
of the EPA limit 4000 µg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2017
1/1 SYR4
Lithium
170 µg/L
No EPA limit set
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2024
1/1 UCMR-5
Copper
151 µg/L 12%
of the EPA limit 1300 µg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
P-Dichlorobenzene
12 µg/L 16%
of the EPA limit 75 µg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Lead
7 µg/L 47%
of the EPA limit 15 µg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
TTHM
6.7 µg/L 8.4%
of the EPA limit 80 µg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Monochloroacetic Acid
5 µg/L
No EPA limit set
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Bromoform
4.9 µg/L
No EPA limit set
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
4.04 pCi/L 81%
of the EPA limit 5 pCi/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2018
1/1 SYR4
Xylenes, Total
1.69 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Dibromochloromethane
1.3 µg/L
No EPA limit set
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Bromodichloromethane
0.6000 µg/L
No EPA limit set
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: WEBSTER CITY WATER SUPPLY · 7,825 people · 2024
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 Webster City

SupplierPopulation served
WEBSTER CITY WATER SUPPLY 7,825

Frequently asked questions about Webster City tap water

Is Webster City tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Webster City. 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 Webster City?

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

What contaminants are in Webster City's water?

The contaminants EPA monitoring detected in Webster City include Nitrate, Fluoride, Lithium, Copper, P-Dichlorobenzene. 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.