Peacock Hill
EPA ID: WA5366637 · 7,401 people served · 39 ZIP codes
ZipCheckup's reading of EPA SDWIS for Peacock Hill (WA5366637): PFAS sampling above the current EPA limit (UCMR5). In every reporting cycle over the past five years, Peacock Hill has come through without a single EPA violation - a consistent performance across the full service population of approximately 7,401 residents that reflects both well-maintained infrastructure and reliable operational oversight.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Peacock Hill Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Peacock Hill serves a community with a median household income of $86,179 and an estimated 384,451 residents across its service area. Approximately 62% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Peacock Hill'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.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 63 detections recorded. 10 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
Peacock Hill (EPA ID: WA5366637) is a community water system in Washington that serves approximately 7,401 people from groundwater sources.
This system provides water to 39 ZIP codes across 2 communities.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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: 1 ZIP code confirmed via EPA Community Water System Service Area Boundaries v3 plus 38 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 39 ZIP codes:
98332 · 98401 · 98402 · 98403 · 98404 98405 · 98406 · 98407 · 98408 · 98409 98411 · 98412 · 98413 · 98415 · 98416 98417 · 98418 · 98419 · 98421 · 98422 98424 · 98431 · 98433 · 98442 · 98443 98444 · 98445 · 98446 · 98447 · 98448 98455 · 98460 · 98464 · 98465 · 98466 98471 · 98481 · 98490 · 98493
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Peacock Hill (WA5366637) on EPA.gov.
Frequently Asked Questions
Is Peacock Hill water safe to drink?
Based on EPA records, Peacock Hill has no recorded violations in the past 5 years - a positive indicator of water quality management.
How many people does Peacock Hill serve?
Peacock Hill serves approximately 7,401 people across 39 ZIP codes in Washington.
Where does Peacock Hill get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
How to cite this page
ZipCheckup. (2026). Peacock Hill Water Quality Report, WA. https://zipcheckup.com/water-system/wa5366637/
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author = {{ZipCheckup}},
title = {{Peacock Hill Water Quality Report, WA}},
year = {2026},
url = {https://zipcheckup.com/water-system/wa5366637/}
}
Data as of April 2026.