Home hazard report for 46327 — Hammond, IN
ZIP 46327 is served by Hammond Water Works Department: 1 violation since 2016, latest lead result 3 ppb, PFAS not detected. Lake County is in EPA radon zone 2.
Health-based violations since 2016: Lead and Copper Rule. All are listed as resolved.
90th-percentile lead in the latest round (Jan 2025). 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.
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code.
Active weather alerts
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Where ZIP 46327 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Hammond Water Works Department
Health-based violations
| Contaminant or rule | Health-based violations since 2016 |
|---|---|
| Lead and Copper Rule | 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 Jul 2020.
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 |
|---|---|---|---|
| PFBS | not detected | 0 of 4 | — |
| PFHpA | not detected | 0 of 4 | — |
| PFHxS | not detected | 0 of 4 | — |
| PFNA | not detected | 0 of 4 | — |
| PFPeA | not detected | 0 of 4 | — |
| PFOS | not detected | 0 of 4 | 4 ppt MCL |
| PFOA | not detected | 0 of 4 | 4 ppt MCL |
| PFDA | not detected | 0 of 4 | — |
| PFHxA | not detected | 0 of 4 | — |
| HFPO-DA (GenX) | not detected | 0 of 4 | — |
| PFBA | not detected | 0 of 4 | — |
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 Lake 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 High, with relatively high social vulnerability and relatively 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 |
|---|---|---|
| Federated Metals Corp Whiting Hammond, Indiana · EPA ID IND005444104 | Active (final NPL) | 1.7 mi |
| Estech General Chemical Company Calumet City, Illinois · EPA ID ILD099213498 | Active (final NPL) | 2.0 mi |
| Schroud Property Chicago, Illinois · EPA ID ILN000505540 | Active (final NPL) | 2.5 mi |
| U.S. Smelter and Lead Refinery, Inc. East Chicago, Indiana · EPA ID IND047030226 | Active (final NPL) | 2.9 mi |
| Lake Calumet Cluster Chicago, Illinois · EPA ID ILD000716852 | Active (final NPL) | 4.2 mi |
| Acme Steel Coke Plant Chicago, Illinois · EPA ID ILN000509241 | Active (final NPL) | 4.2 mi |
| Gary Development Landfill Gary, Indiana · EPA ID IND077005916 | Active (final NPL) | 4.5 mi |
| MIDCO II Gary, Indiana · EPA ID IND980679559 | Active (final NPL) | 5.0 mi |
| Ninth Avenue Dump Gary, Indiana · EPA ID IND980794432 | Active (final NPL) | 5.3 mi |
| MIDCO I Gary, Indiana · EPA ID IND980615421 | Active (final NPL) | 5.5 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 46327
Who supplies drinking water to ZIP 46327?
Hammond Water Works Department (EPA ID IN5245020), a surface water (rivers, lakes) system serving about 78,384 people.
Is there lead in Hammond, IN tap water?
The utility’s latest 90th-percentile lead result (Jan 2025) was 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 Hammond, IN water have PFAS?
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
Has the water system in 46327 had violations?
Health-based violations since 2016: Lead and Copper Rule. All are listed as resolved.
What natural hazards affect ZIP 46327?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively High; the highest-rated hazards are cold wave (very high), tornado (very high), riverine flooding (relatively high).
Are there Superfund sites near 46327?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Federated Metals Corp Whiting (1.7 mi, Active (final NPL)); Estech General Chemical Company (2.0 mi, Active (final NPL)); Schroud Property (2.5 mi, Active (final NPL)).
Is radon a problem in Lake County?
Lake 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.