Home hazard report for 98168 — Seattle, WA
ZIP 98168 is served by King County Water District #20: no health-based violations since 2016, latest lead result No data, PFAS not detected. King County is in EPA radon zone 3.
No health-based violations reported since 2016.
No lead sampling results on file for this system.
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
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 98168 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: King County Water District #20
Health-based violations
No health-based violations reported since 2016.
Full record for King County Water District #20 →
Other systems overlapping this ZIP: King County Water District #125, Tukwila Water Department, Seattle Public Utilities.
Lead
No lead sampling results on file.
PFAS (“forever chemicals”)
| Compound | Highest result | Samples with detection | EPA limit |
|---|---|---|---|
| PFHxA | not detected | 0 of 4 | — |
| PFDA | not detected | 0 of 4 | — |
| PFOA | not detected | 0 of 4 | 4 ppt MCL |
| PFNA | not detected | 0 of 4 | — |
| PFBS | not detected | 0 of 4 | — |
| PFOS | not detected | 0 of 4 | 4 ppt MCL |
| HFPO-DA (GenX) | not detected | 0 of 4 | — |
| PFHpA | not detected | 0 of 4 | — |
| PFBA | not detected | 0 of 4 | — |
| PFPeA | not detected | 0 of 4 | — |
| PFHxS | 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 King 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 High, with relatively moderate social vulnerability and very 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 |
|---|---|---|
| Lower Duwamish Waterway Seattle, Washington · EPA ID WA0002329803 | Active (final NPL) | 1.5 mi |
| Pacific Car & Foundry Co. Renton, Washington · EPA ID WAD009249210 | Active (final NPL) | 4.8 mi |
| Western Processing Co., Inc. Kent, Washington · EPA ID WAD009487513 | Active (final NPL) | 5.2 mi |
| Quendall Terminals Renton, Washington · EPA ID WAD980639215 | Active (final NPL) | 5.6 mi |
| Harbor Island (Lead) Seattle, Washington · EPA ID WAD980722839 | Active (final NPL) | 6.7 mi |
| Seattle Municipal Landfill (Kent Highlands) Kent, Washington · EPA ID WAD980639462 | Active (final NPL) | 6.8 mi |
| Pacific Sound Resources Seattle, Washington · EPA ID WAD009248287 | Active (final NPL) | 7.1 mi |
| Lockheed West Seattle Seattle, Washington · EPA ID WAN001002655 | Active (final NPL) | 7.1 mi |
| Midway Landfill Kent, Washington · EPA ID WAD980638910 | Active (final NPL) | 7.6 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 98168
Who supplies drinking water to ZIP 98168?
King County Water District #20 (EPA ID WA5338950), a surface water (rivers, lakes) system serving about 48,469 people.
Is there lead in Seattle, WA tap water?
No lead sampling results are on file for this system.
Does Seattle, WA water have PFAS?
None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.
Has the water system in 98168 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 98168?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively High; the highest-rated hazards are earthquake (very high), riverine flooding (relatively high), heat wave (relatively moderate).
Are there Superfund sites near 98168?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Lower Duwamish Waterway (1.5 mi, Active (final NPL)); Pacific Car & Foundry Co. (4.8 mi, Active (final NPL)); Western Processing Co., Inc. (5.2 mi, Active (final NPL)).
Is radon a problem in King County?
King 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.