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Tap water quality report

Madison, KS

EPA monitoring detected 20 contaminants across the 2 water suppliers serving 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
1,082
people served
20
contaminants found
Kansas rankings Lead in Kansas PFAS in Kansas

What was found in 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
Copper
515 µg/L 40%
of the EPA limit 1300 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Nitrate
277.5 µg/L 2.8%
of the EPA limit 10000 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
1/2 SYR4
Fluoride
230 µg/L 5.8%
of the EPA limit 4000 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
1/2 SYR4
TTHM
100.1 µg/L 125%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
Highest in the city: 119 µg/L — GREENWOOD CO RWD 3 · 400 people · 2019
2/2 SYR4
Chloroform
62.05 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
Highest in the city: 86.2 µg/L — GREENWOOD CO RWD 3 · 400 people · 2019
2/2 SYR4
Barium
80.25 µg/L 4%
of the EPA limit 2000 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
49.9 µg/L 83%
of the EPA limit 60 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
Highest in the city: 62.6 µg/L — GREENWOOD CO RWD 3 · 400 people · 2019
2/2 SYR4
Dichloroacetic Acid
24 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
Highest in the city: 31.5 µg/L — GREENWOOD CO RWD 3 · 400 people · 2019
2/2 SYR4
Trichloroacetic Acid
22.45 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
Highest in the city: 29.4 µg/L — GREENWOOD CO RWD 3 · 400 people · 2019
2/2 SYR4
Bromodichloromethane
27.45 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Dibromochloromethane
13 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Lead
5.83 µg/L 39%
of the EPA limit 15 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Monobromoacetic Acid
4.5 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Monochloroacetic Acid
3.91 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Dibromoacetic Acid
3.455 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Bromoform
1.965 µg/L
No EPA limit set
Main supplier: MADISON, CITY OF · 682 people · 2019
2/2 SYR4
Chromium
1.955 µg/L 2%
of the EPA limit 100 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
1/2 SYR4
Selenium
1.65 µg/L 3.3%
of the EPA limit 50 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
1/2 SYR4
Arsenic
1.2 µg/L 12%
of the EPA limit 10 µg/L
Main supplier: MADISON, CITY OF · 682 people · 2019
1/2 SYR4
Lead
0.0150 mg/L 100%
of the EPA limit 0.0150 mg/L
Main supplier: MADISON, CITY OF · 682 people · 2023
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 Madison

SupplierPopulation served
MADISON, CITY OF 682
GREENWOOD CO RWD 3 400

Frequently asked questions about Madison tap water

Is Madison tap water safe to drink?

EPA testing detected 20 contaminants in the water serving 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 Madison?

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

What contaminants are in Madison's water?

The contaminants EPA monitoring detected in Madison include Copper, Nitrate, Fluoride, 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.