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Tap water quality report

Fort Madison, IA

EPA monitoring detected 16 contaminants across the 2 water suppliers serving Fort Madison. 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
22,927
people served
16
contaminants found
Iowa rankings Lead in Iowa PFAS in Iowa

What was found in Fort Madison'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
Highest in the city: FT MADISON MUNI WATER WORKS · 11,087 people · 2019
1/2 SYR4
Lead
15.75 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2018
Highest in the city: 307.95 µg/L — FT MADISON MUNI WATER WORKS · 11,087 people · 2018
2/2 SYR4
Copper
137.5 µg/L 11%
of the EPA limit 1300 µg/L
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2018
2/2 SYR4
TTHM
55.75 µg/L 70%
of the EPA limit 80 µg/L
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Chloroform
46.15 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
21.75 µg/L 36%
of the EPA limit 60 µg/L
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Lithium
16 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2024
1/2 UCMR-5
Dichloroacetic Acid
15 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Bromodichloromethane
9.315 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Trichloroacetic Acid
7.5 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Dibromochloromethane
3.4 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Xylenes, Total
2.3 µg/L 0%
of the EPA limit 10000 µg/L
Highest in the city: FT MADISON MUNI WATER WORKS · 11,087 people · 2019
1/2 SYR4
Bromoform
1.16 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
2/2 SYR4
Dibromoacetic Acid
1 µg/L
No EPA limit set
Highest in the city: FT MADISON MUNI WATER WORKS · 11,087 people · 2019
1/2 SYR4
Pfba
0.0120 µg/L
No EPA limit set
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2024
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2024
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 Fort Madison

SupplierPopulation served
RATHBUN REG WATER ASSN (FT MADISON) 11,840
FT MADISON MUNI WATER WORKS 11,087

Frequently asked questions about Fort Madison tap water

Is Fort Madison tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Fort Madison. 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 Fort Madison?

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

What contaminants are in Fort Madison's water?

The contaminants EPA monitoring detected in Fort Madison include Nitrate, Lead, Copper, TTHM, Chloroform. 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.