Home hazard report for 61104 — Rockford, IL
ZIP 61104 is served by Rockford: no health-based violations since 2016, latest lead result 10 ppb, PFAS 2 detected. Winnebago County is in EPA radon zone 1.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jan 2026). 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.
FEMA’s overall natural-hazard risk for this census tract, relative to the rest of the U.S.
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code.
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Where ZIP 61104 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Rockford
Health-based violations
No health-based violations reported since 2016.
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 |
|---|---|---|---|
| PFHxS | 6.6 ppt | 2 of 44 | — |
| PFPeA | 4.4 ppt | 1 of 44 | — |
| PFOS | not detected | 0 of 44 | 4 ppt MCL |
| PFBS | not detected | 0 of 44 | — |
| PFNA | not detected | 0 of 44 | — |
| PFDA | not detected | 0 of 44 | — |
| PFHpA | not detected | 0 of 44 | — |
| PFHxA | not detected | 0 of 44 | — |
| HFPO-DA (GenX) | not detected | 0 of 44 | — |
| PFBA | not detected | 0 of 44 | — |
| PFOA | not detected | 0 of 44 | 4 ppt MCL |
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 Winnebago County
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 →
Natural hazard risk
FEMA rates the overall natural-hazard risk of this neighborhood (census tract) as Relatively Low, with very high social vulnerability and relatively moderate 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 |
|---|---|---|
| Interstate Pollution Control, Inc. Rockford, Illinois · EPA ID ILT180011975 | Active (final NPL) | 1.2 mi |
| Southeast Rockford Ground Water Contamination Rockford, Illinois · EPA ID ILD981000417 | Active (final NPL) | 1.5 mi |
| Pagel's Pit Rockford, Illinois · EPA ID ILD980606685 | Active (final NPL) | 6.6 mi |
| Acme Solvents Reclaiming, Inc. (Morristown Plant) Morristown, Illinois · EPA ID ILD053219259 | Active (final NPL) | 6.7 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 61104
Who supplies drinking water to ZIP 61104?
Rockford (EPA ID IL2010300), a groundwater (wells) system serving about 147,051 people.
Is there lead in Rockford, IL tap water?
The utility’s latest 90th-percentile lead result (Jan 2026) was 10 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 Rockford, IL water have PFAS?
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Has the water system in 61104 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 61104?
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 61104?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Interstate Pollution Control, Inc. (1.2 mi, Active (final NPL)); Southeast Rockford Ground Water Contamination (1.5 mi, Active (final NPL)); Pagel's Pit (6.6 mi, Active (final NPL)).
Is radon a problem in Winnebago County?
Winnebago County is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.