Madison Tap Water Quality Report
Madison's water has 9 contaminants above EPA MCLGs. We recommend using a certified water filter.
Utility
MADISON WATER SYSTEM
People Served
1,551
MCL Violations
0
Last Updated
Is Madison Tap Water Safe to Drink?
Madison's water has 9 contaminants above EPA health-based guidelines. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Madison's water.
The data below shows test results from 1 water utility serving 1,551 people in the Madison area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated .
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Minnesota
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Verify Your Water Quality with Independent Testing
With 9 contaminants above EPA health guidelines, independent laboratory testing provides a second opinion and can track changes over time.
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Haloacetic Acids (HAA9) Test
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Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
With 9 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Madison's water readings can explain
Utility-reported data for Madison includes sulfate — the readings behind these common tap water questions. We publish a city-level hardness figure for Madison, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Madison? Public-water results do not apply to private wells. See Lac qui Parle County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
What a water softener costs for Madison's water
Madison's tap water measures 28.8 grains per gallon (493.0 mg/L) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 28.8 gpg water in Madison — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full.
Frequently Asked Questions About Madison Tap Water
Madison's water has 9 contaminants above EPA MCLGs. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Madison's water.
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