ZipCheckup grade for 99258: D.
Federal records show several conditions worth reviewing.
Your top priority: test this home for radon. Check your ZIP → EPA radon map
Spokane, WA (99258): PFAS Detected in Mapped Water Systems - 50/100
EPA data for City of Spokane
EPA records for the water systems mapped to 99258 in Spokane, 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 0.002 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
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The critical alert on record for 99258 in Spokane stands alone - no high-priority findings appear in the same compiled data.
Score Breakdown
Overall Home Safety Score: 50/100
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 (8) HIGH
Your Water System
ZIP code 99258 in Spokane, Washington is mapped to the water system City of Spokane (EPA ID: WA5383100). This system provides water to approximately 346,138 people from groundwater sources.
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
- 99210 (Spokane) - <1 mi
- 99211 (Spokane) - <1 mi
- 99214 (Spokane) - <1 mi
- 99215 (Spokane) - <1 mi
- 99219 (Spokane) - <1 mi
- 99220 (Spokane) - <1 mi
- 99228 (Spokane) - <1 mi
- 99251 (Spokane) - <1 mi - 3 violations recorded for mapped water systems
- 99252 (Spokane) - <1 mi
- 99256 (Spokane) - <1 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Spokane (WA5383100) on EPA.gov.
3 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.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 99258. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFOS, PFBS, PFHxA, PFPeA.
Highest measured level: 0.0061 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (10) HIGH
Home & Infrastructure (8) 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 99258 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 99258 (primary system: City of Spokane), 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 99258's water come from?
The recorded water source for City of Spokane, a system mapped to ZIP code 99258, is Groundwater. This system serves approximately 346,138 people.
How does Spokane water compare to the national average?
Spokane's Home Safety Score ranks lower than 93% of U.S. ZIP codes, and lower than 92% of ZIP codes within Washington.
How can I get my water tested in Spokane?
If City of Spokane 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 99258 tap water?
The Lead and Copper Rule record selected for 99258 reports a 90th-percentile lead result of 0.002 mg/L for a water system mapped to this ZIP (record date 2024-12-31). 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 99258?
99258 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Spokane County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 99258's water?
Yes, PFAS have been detected in samples from water systems mapped to 99258. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
How to cite this page
ZipCheckup. (2026). Spokane, WA (99258): PFAS Detected in Mapped Water Systems - 50/100. https://zipcheckup.com/report/99258/
@misc{zipcheckup-report-99258,
author = {{ZipCheckup}},
title = {{Spokane, WA (99258): PFAS Detected in Mapped Water Systems - 50/100}},
year = {2026},
url = {https://zipcheckup.com/report/99258/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 99258
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 99210 | Spokane, WA | <1 mi | N/A | 0 |
| 99211 | Spokane, WA | <1 mi | N/A | 0 |
| 99214 | Spokane, WA | <1 mi | N/A | 0 |
| 99215 | Spokane, WA | <1 mi | N/A | 0 |
| 99219 | Spokane, WA | <1 mi | N/A | 0 |
| 99220 | Spokane, WA | <1 mi | N/A | 0 |
| 99228 | Spokane, WA | <1 mi | N/A | 0 |
| 99251 | Spokane, WA | <1 mi | N/A | 3 |
| 99252 | Spokane, WA | <1 mi | N/A | 0 |
| 99256 | Spokane, WA | <1 mi | N/A | 0 |
Nearby ZIP Code Reports
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