Home hazard report for 98366 — Port Orchard, WA
ZIP 98366 is served by West Sound Utility District #1: no health-based violations since 2016, latest lead result 1 ppb, PFAS 5.7 ppt. Kitsap County is in EPA radon zone 3.
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.
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. 4 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.
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Where ZIP 98366 is
Dashed: ZIP area · blue: utility service area · scroll or pinch to zoomDrinking water: West Sound Utility District #1
Health-based violations
No health-based violations reported since 2016.
Full record for West Sound Utility District #1 →
Other systems overlapping this ZIP: Manchester Water District, Port Orchard Water Dept.
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 |
|---|---|---|---|
| PFHxS | 8 ppt | 1 of 18 | — |
| PFOA | 5.7 ppt | 1 of 18 | 4 ppt MCL |
| PFPeA | 5.3 ppt | 1 of 18 | — |
| PFHxA | 4.9 ppt | 1 of 18 | — |
| PFNA | not detected | 0 of 18 | — |
| PFDA | not detected | 0 of 18 | — |
| PFOS | not detected | 0 of 18 | 4 ppt MCL |
| PFHpA | not detected | 0 of 18 | — |
| PFBS | not detected | 0 of 18 | — |
| HFPO-DA (GenX) | not detected | 0 of 18 | — |
| PFBA | not detected | 0 of 18 | — |
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 Kitsap 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 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 |
|---|---|---|
| Old Navy Dump/Manchester Laboratory (USEPA/NOAA) Manchester, Washington · EPA ID WA8680030931 | Active (final NPL) | 2.7 mi |
| Puget Sound Naval Shipyard Complex Bremerton, Washington · EPA ID WA2170023418 | Active (final NPL) | 3.5 mi |
| Bremerton Gasworks Bremerton, Washington · EPA ID WAN001002907 | Active (final NPL) | 4.0 mi |
| Wyckoff Co./Eagle Harbor Bainbridge Island, Washington · EPA ID WAD009248295 | Active (final NPL) | 6.2 mi |
| Jackson Park Housing Complex (USNAVY) Kitsap County, Washington · EPA ID WA3170090044 | Active (final NPL) | 6.4 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 98366
Who supplies drinking water to ZIP 98366?
West Sound Utility District #1 (EPA ID WA5302600), a groundwater (wells) system serving about 28,930 people.
Is there lead in Port Orchard, WA 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 Port Orchard, 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. 4 PFAS compounds detected.
Has the water system in 98366 had violations?
No health-based violations reported since 2016.
What natural hazards affect ZIP 98366?
FEMA’s National Risk Index rates the overall natural-hazard risk here as Relatively Moderate; the highest-rated hazards are earthquake (relatively high), coastal flooding (relatively moderate), heat wave (relatively moderate).
Are there Superfund sites near 98366?
Active or proposed Superfund (National Priorities List) sites near the center of this ZIP code. Sites within 10 miles: Old Navy Dump/Manchester Laboratory (USEPA/NOAA) (2.7 mi, Active (final NPL)); Puget Sound Naval Shipyard Complex (3.5 mi, Active (final NPL)); Bremerton Gasworks (4.0 mi, Active (final NPL)).
Is radon a problem in Kitsap County?
Kitsap 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.