ZipCheckup grade for 98158: A.
Checked records flag no major concern; missing data is unknown.
Seattle, WA (98158) Home Safety: 100/100
EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: Highline Water District)
EPA records for the water systems mapped to 98158 in Seattle, WA contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water No drinking-water violations in EPA records since 2021.
- Lead The reported 90th-percentile lead result of 0.0014 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
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Score Breakdown
Overall Home Safety Score: 100/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (6) MODERATE
Your Water System
ZIP code 98158 in Seattle, Washington is mapped to the water system Highline Water District (EPA ID: WA5340650). This system provides water to approximately 100,170 people from surface water sources.
There are 2 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Highline Water District | WA5340650 | 100,170 | Surface water |
| King County Water District #49 | WA5339800 | 23,492 | Surface water |
Other Water Quality Reports in Washington
- 98001 (Auburn) - 6 violations recorded for mapped water systems
- 98002 (Auburn) - 2 violations recorded for mapped water systems
- 98003 (Federal Way) - 1 violation recorded for mapped water systems
- 98004 (Bellevue) - 3 violations recorded for mapped water systems
- 98005 (Bellevue)
- 98006 (Bellevue) - 5 violations recorded for mapped water systems
- 98007 (Bellevue)
- 98008 (Bellevue)
- 98009 (Bellevue)
- 98010 (Black Diamond)
- 98011 (Bothell) - 1 violation recorded for mapped water systems
- 98012 (Bothell) - 2 violations recorded for mapped water systems
- 98013 (Burton)
- 98014 (Carnation) - 3 violations recorded for mapped water systems
- 98015 (Bellevue)
- 98019 (Duvall) - 45 violations recorded for mapped water systems
- 98020 (Edmonds) - 3 violations recorded for mapped water systems
- 98021 (Bothell) - 5 violations recorded for mapped water systems
- 98022 (Enumclaw) - 2 violations recorded for mapped water systems
- 98023 (Federal Way) - 1 violation recorded for mapped water systems
Nearby Water Quality Reports
- 98148 (Seattle) - <1 mi - 1 violation recorded for mapped water systems
- 98132 (Seattle) - 1 mi
- 98188 (Seattle) - 2 mi - 3 violations recorded for mapped water systems
- 98166 (Seattle) - 2 mi
- 98168 (Seattle) - 3 mi - 1 violation recorded for mapped water systems
- 98062 (Seahurst) - 3 mi
- 98189 (Seattle) - 3 mi
- 98198 (Seattle) - 4 mi - 3 violations recorded for mapped water systems
- 98146 (Seattle) - 4 mi
- 98057 (Renton) - 4 mi - 1 violation recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Highline Water District (WA5340650) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 98158 show no PFAS detections among the compounds tested, at the program's reporting levels.
The EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5) required community and non-transient non-community water systems serving 3,300 or more people to test for 29 PFAS compounds and lithium between 2023 and 2025. Systems with no detections at the federal minimum reporting level had no results at or above that reporting level.
Environmental Hazards (9) CRITICAL
Home & Infrastructure (3) OK
Cost & Community (6) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Frequently Asked Questions
Is the tap water in 98158 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 98158 (primary system: Highline Water District), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 98158's water come from?
The recorded water source for Highline Water District, a system mapped to ZIP code 98158, is Surface water. This system serves approximately 100,170 people.
How does Seattle water compare to the national average?
Seattle's Home Safety Score ranks better than 93% of U.S. ZIP codes, and at or above 70% within Washington.
How can I get my water tested in Seattle?
If Highline Water District supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 98158 tap water?
The Lead and Copper Rule record selected for 98158 reports a 90th-percentile lead result of 0.0014 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 98158?
98158 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in King County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
How to cite this page
ZipCheckup. (2026). Seattle, WA (98158) Home Safety: 100/100. https://zipcheckup.com/report/98158/
@misc{zipcheckup-report-98158,
author = {{ZipCheckup}},
title = {{Seattle, WA (98158) Home Safety: 100/100}},
year = {2026},
url = {https://zipcheckup.com/report/98158/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 98158
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 98148 | Seattle, WA | <1 mi | A | 1 |
| 98132 | Seattle, WA | 1.1 mi | N/A | 0 |
| 98188 | Seattle, WA | 1.6 mi | A | 3 |
| 98166 | Seattle, WA | 2.1 mi | A | 0 |
| 98168 | Seattle, WA | 2.7 mi | A | 1 |
| 98062 | Seahurst, WA | 2.9 mi | N/A | 0 |
| 98189 | Seattle, WA | 3.4 mi | N/A | 0 |
| 98198 | Seattle, WA | 3.9 mi | A | 3 |
| 98146 | Seattle, WA | 4.2 mi | A | 0 |
| 98057 | Renton, WA | 4.3 mi | A | 1 |
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Overall safety breakdown
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