Home hazard report for 53790 — Madison, WI
ZIP 53790 is served by Madison Water Utility: 1 violation since 2016, latest lead result 1.8 ppb, PFAS 2 detected. Dane is in EPA radon zone 1.
Health-based violations since 2016: Lead and Copper Rule Revisions. All are listed as resolved.
90th-percentile lead in the latest round (Jun 2023). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
The nearest active Superfund site is 4.6 miles away.
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Where ZIP 53790 is
blue: utility service area · scroll or pinch to zoomDrinking water: Madison Water Utility
Health-based violations
| Contaminant or rule | Health-based violations since 2016 |
|---|---|
| Lead and Copper Rule Revisions | 1 |
A health-based violation means a contaminant exceeded its legal limit (MCL) or a required treatment technique was not met, as reported by the state to EPA’s SDWIS. All are listed as resolved or archived; the latest began Oct 2024.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS (“forever chemicals”)
| Compound | Highest result | Samples with detection | EPA limit |
|---|---|---|---|
| PFBA | 46.5 ppt | 2 of 40 | — |
| PFHxS | 7.3 ppt | 4 of 40 | — |
| PFPeA | not detected | 0 of 40 | — |
| PFOA | not detected | 0 of 40 | 4 ppt MCL |
| PFBS | not detected | 0 of 40 | — |
| HFPO-DA (GenX) | not detected | 0 of 40 | — |
| PFOS | not detected | 0 of 40 | 4 ppt MCL |
| PFHpA | not detected | 0 of 40 | — |
| PFDA | not detected | 0 of 40 | — |
| PFHxA | not detected | 0 of 40 | — |
| PFNA | not detected | 0 of 40 | — |
EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.
Radon in Dane
EPA radon zone 1 — highest potential. Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.
Radon is a colorless, odorless radioactive gas from soil and rock, and the leading cause of lung cancer among non-smokers. EPA recommends fixing a home at 4 pCi/L or above and considering it from 2 pCi/L. A short-term test kit costs about $15–30. How radon zones work →
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Madison Metropolitan Sewerage District Lagoons Blooming Grove, Wisconsin · EPA ID WID078934403 | Active (final NPL) | 4.6 mi |
| Refuse Hideaway Landfill Middleton, Wisconsin · EPA ID WID980610604 | Active (final NPL) | 8.2 mi |
| City Disposal Corp. Landfill Dunn, Wisconsin · EPA ID WID980610646 | Active (final NPL) | 9.2 mi |
EPA Superfund National Priorities List (NPL): the country’s most serious known hazardous-waste sites, each with an EPA cleanup record (linked). Distance is measured from the ZIP center to the site’s reference point; being near a site does not by itself mean exposure — EPA site pages describe what was found and how it is being cleaned up.
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions about 53790
Who supplies drinking water to ZIP 53790?
Madison Water Utility (EPA ID WI1130224), a groundwater (wells) system serving about 272,000 people.
Is there lead in Madison, WI tap water?
The utility’s latest 90th-percentile lead result (Jun 2023) was 1.8 ppb; EPA’s action level is 15 ppb, falling to 10 ppb from 2027. Lead mostly comes from service lines and home plumbing, so the only way to know your tap is to test it.
Does Madison, WI water have PFAS?
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Has the water system in 53790 had violations?
Health-based violations since 2016: Lead and Copper Rule Revisions. All are listed as resolved.
Are there Superfund sites near 53790?
The nearest active Superfund site is 4.6 miles away. Sites within 10 miles: Madison Metropolitan Sewerage District Lagoons (4.6 mi, Active (final NPL)); Refuse Hideaway Landfill (8.2 mi, Active (final NPL)); City Disposal Corp. Landfill (9.2 mi, Active (final NPL)).
Is radon a problem in Dane?
Dane is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.