Home hazard report for 98438 — Mcchord Afb, WA
ZIP 98438 is served by JBLM Lewis: no health-based violations since 2016, latest lead result 0 ppb, PFAS 11.1 ppt. Pierce County is in EPA radon zone 3.
No health-based violations reported since 2016.
90th-percentile lead in the latest round (Jan 2023). Lead comes mostly from household plumbing and service lines, so individual homes can be higher.
Highest PFOA or PFOS result in EPA’s 2023–2025 testing was at or above 4.0 ppt, EPA’s 2024 maximum contaminant level for each. 5 PFAS compounds detected.
Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.
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 98438 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: JBLM Lewis
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 |
|---|---|---|---|
| PFOS | 11.1 ppt | 6 of 12 | 4 ppt MCL |
| PFHxS | 8.8 ppt | 6 of 12 | — |
| PFOA | 6.8 ppt | 4 of 12 | 4 ppt MCL |
| PFBS | 5.4 ppt | 6 of 12 | — |
| PFPeA | 3.1 ppt | 1 of 12 | — |
| PFBA | not detected | 0 of 12 | — |
| HFPO-DA (GenX) | not detected | 0 of 12 | — |
| PFNA | not detected | 0 of 12 | — |
| PFHpA | not detected | 0 of 12 | — |
| PFDA | not detected | 0 of 12 | — |
| PFHxA | 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 Pierce County
EPA radon zone 3 — low potential. Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.
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 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 |
|---|---|---|
| McChord Air Force Base (Wash Rack/Treatment Area) Tacoma, Washington · EPA ID WA8570024200 | Cleaned up & deleted | <1 mi |
| Lakewood Lakewood, Washington · EPA ID WAD050075662 | Active (final NPL) | 1.1 mi |
| American Lake Gardens/McChord AFB Tacoma, Washington · EPA ID WAD980833065 | Active (final NPL) | 1.8 mi |
| Fort Lewis Logistics Center Tillicum, Washington · EPA ID WA7210090067 | Active (final NPL) | 2.5 mi |
| Fort Lewis (Landfill No. 5) Tacoma, Washington · EPA ID WA9214053465 | Cleaned up & deleted | 6.6 mi |
| Commencement Bay, South Tacoma Channel Tacoma, Washington · EPA ID WAD980726301 | Active (final NPL) | 6.6 mi |
| Commencement Bay, Near Shore/Tide Flats Pierce County, Washington · EPA ID WAD980726368 | Active (final NPL) | 9.8 mi |
| Hidden Valley Landfill (Thun Field) Pierce County, Washington · EPA ID WAD980511539 | Active (final NPL) | 10.0 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 98438
Who supplies drinking water to ZIP 98438?
JBLM Lewis (EPA ID WA5326050), a groundwater (wells) system serving about 35,414 people.
Is there lead in Mcchord Afb, WA tap water?
The utility’s latest 90th-percentile lead result (Jan 2023) was 0 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 Mcchord Afb, WA water have PFAS?
Highest PFOA or PFOS result in EPA’s 2023–2025 testing was at or above 4.0 ppt, EPA’s 2024 maximum contaminant level for each. 5 PFAS compounds detected.
Has the water system in 98438 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 98438?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Low; the highest-rated hazards are earthquake (relatively moderate), heat wave (relatively low), lightning (relatively low).
Are there Superfund sites near 98438?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: McChord Air Force Base (Wash Rack/Treatment Area) (0.4 mi, Cleaned up & deleted); Lakewood (1.1 mi, Active (final NPL)); American Lake Gardens/McChord AFB (1.8 mi, Active (final NPL)).
Is radon a problem in Pierce County?
Pierce County is in EPA radon zone 3 (low potential). Predicted average under 2 pCi/L — but any home can have high radon, so EPA still recommends a test.