Is Madison, KS tap water safe?
The short answer
2 of the 2 utilities serving Madison have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Kansas’s records: City of Madison and Greenwood Co RWD 3.
City of Madison, which serves the most people here, has 1 result above the legal limit, 1 result above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 63.3 ppb, above the legal limit.
The water from City of Madison is hard, 150 mg/L (8.8 grains per gallon). How Kansas’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Madison’s ZIP codes, from EPA’s estimates.
- Open report
City of Madison
Kansas · serves 682 people · under 100 in Madison
1 result above the legal limit, 1 result above the limit’s level with no violation recorded and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 63.3 ppb, above the legal limit. Hardness: hard, 150 mg/L (8.8 grains per gallon).
2 health-based violations since 2016
- Open report
Greenwood Co RWD 3
Kansas · serves 400 people · under 100 in Madison
1 result above the legal limit and 1 result above the health goal. The worst: Haloacetic acids (HAA5) at 63.8 ppb, above the legal limit.
3 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in City of Madison’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana Clean Water Machine (AQ-CWM2)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Brita Hub Countertop Water Filter System (87340)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Ninja HydraSense Countertop Water Filtration System (WF1001)
Countertop
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Water testing near Madison
The 2 labs Kansas certifies closest to Madison, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Meridian Analytical Laboratory - Wichita
Wichita, KS · about 68 miles
Certified for bacteria, nitrate, minerals and other inorganics, organic chemicals, disinfection byproducts
Irwin Army Community Hospital-Water Laboratory-PH-EH
Fort Riley, KS · about 75 miles
Certified for bacteria
ZIP codes in Madison
Which ZIP codes are in Madison: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Kansas Department of Health and Environment, drinking water labs, as listed in TNI LAMS; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Madison
Towns nearby with a page of their own.
What to do next
- Read City of Madison’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Haloacetic acids (HAA5)What it does to health, where it comes from, and the certification claim that addresses it.About Haloacetic acids (HAA5)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water