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Tap water quality report

Madison, City of

EPA monitoring tested this supplier for 68 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
12
detected
2,135
people served
6
health-based violations
Nebraska rankingsLead in NebraskaPFAS in Nebraska
Water source
Ground water
Ownership
Local government
Counties served
Madison

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

6
health-based violations
10
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2002-07-01 → 2002-07-31
MCL Health-based Resolved 2002-07-01 → 2002-07-31
MCL Health-based Resolved 2002-07-01 → 2002-07-31
MCL Health-based Resolved 2002-07-01 → 2002-07-31
MCL Health-based Resolved 1980-10-01 → 1981-09-30
MCL Health-based Archived 1978-05-18 → 1978-06-17
MON Monitoring Resolved 2026-01-01 → 2026-01-31
MON Monitoring Resolved 2026-01-01 → 2026-01-31
MON Monitoring Resolved 2026-01-01 → 2026-01-31
MON Monitoring Resolved 2026-01-01 → 2026-01-31

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
2376.5 µg/L 24%
of the EPA limit 10000 µg/L
worst single sample: 2410 µg/L
64/64 SYR4 2012–2019
Copper
781.95 µg/L 60%
of the EPA limit 1300 µg/L
worst single sample: 857 µg/L
20/20 SYR4 2014–2017
Lead
3.2875 µg/L 22%
of the EPA limit 15 µg/L
worst single sample: 3.88 µg/L
16/20 SYR4 2014–2017
Arsenic
7.3395 µg/L 73%
of the EPA limit 10 µg/L
worst single sample: 7.73 µg/L
12/12 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2023
Barium
210.6 µg/L 11%
of the EPA limit 2000 µg/L
worst single sample: 216 µg/L
7/7 SYR4 2013–2019
Fluoride
359.9 µg/L 9%
of the EPA limit 4000 µg/L
worst single sample: 386 µg/L
7/7 SYR4 2013–2019
Selenium
30.54 µg/L 61%
of the EPA limit 50 µg/L
worst single sample: 30.6 µg/L
7/7 SYR4 2013–2019
Combined Radium (-226 And -228)
2.12 pCi/L 42%
of the EPA limit 5 pCi/L
worst single sample: 2.23 pCi/L
6/8 SYR4 2012–2018
Chromium
7.5365 µg/L 7.5%
of the EPA limit 100 µg/L
worst single sample: 8.63 µg/L
4/7 SYR4 2013–2019
Di(2-ethylhexyl) Adipate
4.01 µg/L 1%
of the EPA limit 400 µg/L
 1/23 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
2.55 µg/L 43%
of the EPA limit 6 µg/L
 1/23 SYR4 2012–2019
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDibromochloromethaneDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SCHNEBEL, MATT
Email
[email protected]

Frequently asked questions about Madison, City of

Is Madison, City of tap water safe to drink?

EPA monitoring detected 12 contaminants in Madison, City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Madison, City of's water?

EPA monitoring detected Nitrate-Nitrite, Copper, Lead, Arsenic, Lead, and others. The full list with the level and data source for each is above.

How many people does Madison, City of serve?

Madison, City of reports serving 2,135 people in Nebraska, per its EPA record.

Has Madison, City of had any water quality violations?

The EPA has 10 violations on file for Madison, City of, of which 6 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.