Home hazard report for 53024 — Grafton, WI
ZIP 53024 is served by Grafton Waterworks: no health-based violations since 2016, latest lead result 3.3 ppb, PFAS not detected. Ozaukee County is in EPA radon zone 2.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jun 2023). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.
FEMA’s overall natural-hazard risk for this census tract, relative to the rest of the U.S.
The nearest active Superfund site is 3.9 miles away.
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Where ZIP 53024 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Grafton Waterworks
Health-based violations
No health-based violations reported since 2016.
Full record for Grafton Waterworks →
Other systems overlapping this ZIP: Port Washington Waterworks.
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 |
|---|---|---|---|
| PFNA | not detected | 0 of 12 | — |
| PFBA | not detected | 0 of 12 | — |
| PFHxA | not detected | 0 of 12 | — |
| PFDA | not detected | 0 of 12 | — |
| PFOS | not detected | 0 of 12 | 4 ppt MCL |
| HFPO-DA (GenX) | not detected | 0 of 12 | — |
| PFHxS | not detected | 0 of 12 | — |
| PFHpA | not detected | 0 of 12 | — |
| PFOA | not detected | 0 of 12 | 4 ppt MCL |
| PFBS | not detected | 0 of 12 | — |
| PFPeA | not detected | 0 of 12 | — |
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 Ozaukee County
EPA radon zone 2 — moderate potential. Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.
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 →
Natural hazard risk
FEMA rates the overall natural-hazard risk of this neighborhood (census tract) as Relatively Low, with very low social vulnerability and very high community resilience.
FEMA National Risk Index (December 2025): expected annual losses from each hazard combined with social vulnerability and community resilience, rated relative to all U.S. census tracts. Hazards not listed are not applicable here. It describes the area, not a single building; flood insurance maps (FEMA FIRMs) decide flood-insurance requirements.
Live conditions: river gauges and flood levels · tornado warnings · wildfire detections · earthquakes — our sister maps, updated from NOAA, USGS and NASA every few minutes.
Superfund sites nearby
| Site | Status | Distance |
|---|---|---|
| Amcast Industrial Corporation Cedarburg, Wisconsin · EPA ID WIN000510210 | Active (final NPL) | 3.9 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 53024
Who supplies drinking water to ZIP 53024?
Grafton Waterworks (EPA ID WI2460111), a groundwater (wells) system serving about 12,269 people.
Is there lead in Grafton, WI tap water?
The utility’s latest 90th-percentile lead result (Jun 2023) was 3.3 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 Grafton, WI water have PFAS?
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
Has the water system in 53024 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 53024?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Low; the highest-rated hazards are cold wave (relatively high), hail (relatively moderate), lightning (relatively moderate).
Are there Superfund sites near 53024?
The nearest active Superfund site is 3.9 miles away. Sites within 10 miles: Amcast Industrial Corporation (3.9 mi, Active (final NPL)).
Is radon a problem in Ozaukee County?
Ozaukee County is in EPA radon zone 2 (moderate potential). Predicted average indoor radon between 2 and 4 pCi/L. Test your home; many homes here exceed 4 pCi/L.