Home hazard report for 46319 — Griffith, IN
ZIP 46319 is served by Griffith Water Department: no health-based violations since 2016, latest lead result 1 ppb, PFAS not detected. Lake County is in EPA radon zone 2.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jan 2021). 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.
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Where ZIP 46319 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: Griffith Water Department
Health-based violations
No health-based violations reported since 2016.
Full record for Griffith Water Department →
Other systems overlapping this ZIP: Schererville Water Department, Indiana American Water - Northwest.
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 | not detected | 0 of 4 | — |
| PFPeA | not detected | 0 of 4 | — |
| PFNA | not detected | 0 of 4 | — |
| PFHxA | not detected | 0 of 4 | — |
| PFOA | not detected | 0 of 4 | 4 ppt MCL |
| PFBS | not detected | 0 of 4 | — |
| PFDA | not detected | 0 of 4 | — |
| PFOS | not detected | 0 of 4 | 4 ppt MCL |
| PFHxS | not detected | 0 of 4 | — |
| PFHpA | not detected | 0 of 4 | — |
| HFPO-DA (GenX) | 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 Moderate, with relatively low 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 |
|---|---|---|
| American Chemical Service, Inc. Griffith, Indiana · EPA ID IND016360265 | Active (final NPL) | <1 mi |
| Lake Sandy Jo (M&M Landfill) Gary, Indiana · EPA ID IND980500524 | Active (final NPL) | 4.0 mi |
| MIDCO I Gary, Indiana · EPA ID IND980615421 | Active (final NPL) | 4.7 mi |
| Ninth Avenue Dump Gary, Indiana · EPA ID IND980794432 | Active (final NPL) | 5.0 mi |
| Gary Development Landfill Gary, Indiana · EPA ID IND077005916 | Active (final NPL) | 6.4 mi |
| U.S. Smelter and Lead Refinery, Inc. East Chicago, Indiana · EPA ID IND047030226 | Active (final NPL) | 6.9 mi |
| MIDCO II Gary, Indiana · EPA ID IND980679559 | Active (final NPL) | 7.0 mi |
| Estech General Chemical Company Calumet City, Illinois · EPA ID ILD099213498 | Active (final NPL) | 9.1 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 46319
Who supplies drinking water to ZIP 46319?
Griffith Water Department (EPA ID IN5245019), a surface water (rivers, lakes) system serving about 16,893 people.
Is there lead in Griffith, IN tap water?
The utility’s latest 90th-percentile lead result (Jan 2021) was 1 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 Griffith, IN water have PFAS?
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
Has the water system in 46319 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 46319?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Moderate; the highest-rated hazards are cold wave (very high), tornado (very high), heat wave (relatively moderate).
Are there Superfund sites near 46319?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: American Chemical Service, Inc. (0.5 mi, Active (final NPL)); Lake Sandy Jo (M&M Landfill) (4.0 mi, Active (final NPL)); MIDCO I (4.7 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.