ZipCheckup grade for 98601: D.
Federal records show several conditions worth reviewing.
Your top priority: see the breakdown below and consider a certified water filter. Check your ZIP → NSF certified filters
Amboy, WA (98601): PFAS Detected in Mapped Water Systems - 49/100
EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: Clark Public Utilities)
Health-based violation records by water system:
- Yacolt (1)
EPA records for the water systems mapped to 98601 in Amboy, WA contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 1 health-based violation and 1 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0018 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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Amboy (98601): one critical alert.
Score Breakdown
Overall Home Safety Score: 49/100
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) CRITICAL
Your Water System
ZIP code 98601 in Amboy, Washington is mapped to the water system Clark Public Utilities (EPA ID: WA5313333). This system provides water to approximately 153,526 people from groundwater sources.
There are 2 community water systems serving this area.
Lead & Copper in Your Water
The EPA requires water systems to monitor lead and copper levels under the Lead and Copper Rule.
| Metal | Measured Level | EPA Action Level | Status | Sample Date or Period |
|---|---|---|---|---|
| Copper | Action-level exceedance on record | 1.3 mg/L | Exceeds action level | Not present in ZipCheckup accepted source data |
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Clark Public Utilities | WA5313333 | 153,526 | Groundwater |
| Yacolt | WA5399000 | 3,034 | Groundwater |
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
- 98675 (Yacolt) - 4 mi - 2 violations recorded for mapped water systems
- 98603 (Ariel) - 5 mi
- 98622 (Heisson) - 7 mi
- 98629 (La Center) - 8 mi - 1 violation recorded for mapped water systems
- 98604 (Battle Ground) - 10 mi - 4 violations recorded for mapped water systems
- 98616 (Cougar) - 12 mi
- 98674 (Woodland) - 12 mi - 5 violations recorded for mapped water systems
- 98606 (Brush Prairie) - 13 mi - 1 violation recorded for mapped water systems
- 98642 (Ridgefield) - 15 mi - 2 violations recorded for mapped water systems
- 98686 (Vancouver) - 17 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 Clark Public Utilities (WA5313333) on EPA.gov.
5 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 98601. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFOS, PFOA, PFHxS, PFBS, PFHxA.
Highest measured level: 0.0084 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) MODERATE
Home & Infrastructure (7) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Amboy
Based on local data for ZIP 98601, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Roofing Inspection & Repair
Active weather alerts in Washington increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 98601 safe to drink?
EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 98601 (primary system: Clark Public Utilities), including 1 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 98601's water come from?
The recorded water source for Clark Public Utilities, a system mapped to ZIP code 98601, is Groundwater. This system serves approximately 153,526 people.
How does Amboy water compare to the national average?
Amboy's Home Safety Score ranks lower than 94% of U.S. ZIP codes, and lower than 94% of ZIP codes within Washington.
How can I get my water tested in Amboy?
If Clark Public Utilities 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 98601 tap water?
The Lead and Copper Rule record selected for 98601 reports a 90th-percentile lead result of 0.0018 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 98601?
98601 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Clark 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 98601's water?
Yes, PFAS have been detected in samples from water systems mapped to 98601. 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). Amboy, WA (98601): PFAS Detected in Mapped Water Systems - 49/100. https://zipcheckup.com/report/98601/
@misc{zipcheckup-report-98601,
author = {{ZipCheckup}},
title = {{Amboy, WA (98601): PFAS Detected in Mapped Water Systems - 49/100}},
year = {2026},
url = {https://zipcheckup.com/report/98601/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 98601
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 98675 | Yacolt, WA | 4.2 mi | D | 2 |
| 98603 | Ariel, WA | 5.3 mi | N/A | 0 |
| 98622 | Heisson, WA | 6.7 mi | N/A | 0 |
| 98629 | La Center, WA | 8.5 mi | D | 1 |
| 98604 | Battle Ground, WA | 9.6 mi | D | 4 |
| 98616 | Cougar, WA | 11.9 mi | N/A | 0 |
| 98674 | Woodland, WA | 12.3 mi | A | 5 |
| 98606 | Brush Prairie, WA | 13.1 mi | D | 1 |
| 98642 | Ridgefield, WA | 14.7 mi | D | 2 |
| 98686 | Vancouver, WA | 16.6 mi | D | 1 |
Nearby ZIP Code Reports
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