Home hazard report for 99001 — Airway Heights, WA
ZIP 99001 is served by City of Airway Heights: no health-based violations since 2016, latest lead result 11.1 ppb, PFAS 4 detected. Spokane County is in EPA radon zone 1.
No health-based violations reported since 2016.
Below the current 15 ppb action level but above 10 ppb, the action level under EPA's Lead and Copper Rule Improvements (compliance from 2027). Latest round: Jan 2023.
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.
Active weather alerts
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Where ZIP 99001 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: City of Airway Heights
Health-based violations
No health-based violations reported since 2016.
Full record for City of Airway Heights →
Other systems overlapping this ZIP: City of Spokane.
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 |
|---|---|---|---|
| PFPeA | 139.3 ppt | 2 of 4 | — |
| PFBA | 79.2 ppt | 2 of 4 | — |
| PFHxA | 23.7 ppt | 2 of 4 | — |
| PFHxS | 3.2 ppt | 1 of 4 | — |
| HFPO-DA (GenX) | not detected | 0 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 |
| PFBS | not detected | 0 of 4 | — |
| PFHpA | not detected | 0 of 4 | — |
| PFNA | 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 Spokane 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 Moderate, 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 |
|---|---|---|
| Fairchild Air Force Base (4 Waste Areas) Spokane County, Washington · EPA ID WA9571924647 | Active (final NPL) | 2.9 mi |
| Northside Landfill Spokane, Washington · EPA ID WAD980511778 | Cleaned up & deleted | 7.8 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 99001
Who supplies drinking water to ZIP 99001?
City of Airway Heights (EPA ID WA5300650), a groundwater (wells) system serving about 9,489 people.
Is there lead in Airway Heights, WA tap water?
The utility’s latest 90th-percentile lead result (Jan 2023) was 11.1 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 Airway Heights, WA water have PFAS?
PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).
Has the water system in 99001 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 99001?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Moderate; the highest-rated hazards are cold wave (relatively high), heat wave (relatively high), ice storm (relatively high).
Are there Superfund sites near 99001?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Fairchild Air Force Base (4 Waste Areas) (2.9 mi, Active (final NPL)); Northside Landfill (7.8 mi, Cleaned up & deleted).
Is radon a problem in Spokane County?
Spokane County is in EPA radon zone 1 (highest potential). Predicted average indoor radon above 4 pCi/L — EPA’s action level. Test your home.