Home hazard report for 19404 — Norristown, PA
ZIP 19404 is served by Pa American Norristown (as listed by the state): no health-based violations since 2016, latest lead result 2 ppb, PFAS 4 detected. Montgomery is in EPA radon zone 1.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jun 2025). 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.
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code.
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Where ZIP 19404 is
blue: utility service area · scroll or pinch to zoomDrinking water: Pa American Norristown
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 |
|---|---|---|---|
| PFBA | 7 ppt | 2 of 4 | — |
| PFPeA | 6.9 ppt | 2 of 4 | — |
| PFBS | 5.3 ppt | 2 of 4 | — |
| PFHxA | 5 ppt | 2 of 4 | — |
| PFDA | not detected | 0 of 4 | — |
| PFOA | not detected | 0 of 4 | 4 ppt MCL |
| PFOS | not detected | 0 of 4 | 4 ppt MCL |
| PFNA | not detected | 0 of 4 | — |
| 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 Montgomery
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 |
|---|---|---|
| North Penn - Area 12 Worcester, Pennsylvania · EPA ID PAD057152365 | Active (final NPL) | 2.2 mi |
| Salford Quarry Lower Salford Township, Pennsylvania · EPA ID PAD980693204 | Active (final NPL) | 3.1 mi |
| North Penn - Area 6 Lansdale, Pennsylvania · EPA ID PAD980926976 | Active (final NPL) | 4.1 mi |
| North Penn - Area 7 North Wales, Pennsylvania · EPA ID PAD002498632 | Active (final NPL) | 4.1 mi |
| Moyers Landfill Eagleville, Pennsylvania · EPA ID PAD980508766 | Cleaned up & deleted | 5.7 mi |
| North Penn - Area 2 Hatfield, Pennsylvania · EPA ID PAD002342475 | Active (final NPL) | 6.4 mi |
| Commodore Semiconductor Group Lower Providence Township, Pennsylvania · EPA ID PAD093730174 | Active (final NPL) | 6.9 mi |
| Tysons Dump Upper Merion Township, Pennsylvania · EPA ID PAD980692024 | Active (final NPL) | 7.0 mi |
| North Penn - Area 1 Souderton, Pennsylvania · EPA ID PAD096834494 | Active (final NPL) | 7.0 mi |
| North Penn - Area 5 Montgomery Township, Pennsylvania · EPA ID PAD980692693 | Active (final NPL) | 7.2 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 19404
Who supplies drinking water to ZIP 19404?
Pa American Norristown (EPA ID PA1460046), a surface water (rivers, lakes) system serving about 88,885 people, listed by the state as serving this ZIP code.
Is there lead in Norristown, PA tap water?
The utility’s latest 90th-percentile lead result (Jun 2025) was 2 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 Norristown, PA water have PFAS?
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Has the water system in 19404 had violations?
No health-based violations reported since 2016.
Are there Superfund sites near 19404?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: North Penn - Area 12 (2.2 mi, Active (final NPL)); Salford Quarry (3.1 mi, Active (final NPL)); North Penn - Area 6 (4.1 mi, Active (final NPL)).
Is radon a problem in Montgomery?
Montgomery is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.