Yacolt
EPA ID: WA5399000 · 3,034 people served · 4 ZIP codes
ZipCheckup's reading of EPA SDWIS for Yacolt (WA5399000): 1 past health-based violation, since resolved. Five years tracked: Yacolt had 1 violation, all cleared, 3,034 served.
Data: EPA SDWIS
Service Area Map
Coverage area for Yacolt Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Yacolt serves a community with a median household income of $106,475 and an estimated 65,551 residents across its service area.
💧 Where Does Your Water Come From?
Yacolt's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
Detected Contaminants
How Yacolt compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 16 detections recorded. 6 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Washington
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Yacolt (EPA ID: WA5399000) is a community water system in Washington that serves approximately 3,034 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 2, 2022 | Stage 1 DBP Rule | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 1 | Yes |
Lead & Copper
No reported lead measurement appears for this PWSID in the accepted LCR snapshot. Absence of a reported measurement is not a measured zero.
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by WA or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Yacolt (WA5399000) on EPA.gov.
Frequently Asked Questions
Is Yacolt water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Yacolt; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Yacolt serve?
Yacolt serves approximately 3,034 people across 4 ZIP codes in Washington.
Where does Yacolt get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Yacolt (WA): 1 Health Violation. https://zipcheckup.com/water-system/wa5399000/
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author = {{ZipCheckup}},
title = {{Yacolt (WA): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wa5399000/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Yacolt (EPA ID: WA5399000) - request the latest Consumer Confidence Report or ask about specific contaminants.