Castle Rock Municipal Water
Surface water · Local · PO BOX 370
This page shows official EPA compliance records for Castle Rock Municipal Water, including PFAS monitoring data, violation history, contaminant test results, treatment options, and certified testing lab links for Washington.
Castle Rock Municipal Water is a surface water system serving 4,367 residents in Washington (PWSID: WA5311800). No open health-based violations are recorded in the EPA federal database for this system. EPA UCMR 5 monitoring returned 348 PFAS records for this utility.
At a Glance
WA5311800Intelligence Summary · Castle Rock Municipal Water
No Concerns Detected
Water meets all safety standards with no detected exceedances.
No open health violations on record. This utility has no active EPA violations involving contaminants exceeding legal limits. Always verify with your utility's Consumer Confidence Report for annual test results.
Utility Overview
Population Served
4,367
Source Type
Surface water
Ownership
Local
PWSID
WA5311800
Detected Contaminants
CCR data ingestion in progress
Contaminant detection levels from Consumer Confidence Reports are being parsed and linked to utilities. Check back soon, or view the official report directly from the EPA links below.
View on EPA ECHOEPA UCMR 5 monitoring (2023–2025) returned 348 PFAS records for Castle Rock Municipal Water. Detection is not a regulatory violation, but indicates PFAS compounds were measured during the unregulated contaminant monitoring cycle. Review the full records and compare detected levels against current EPA MCLs.
What should I do next?
PFAS monitoring records are on file for Castle Rock Municipal Water. Review the detected compounds, compare them with current regulatory guidance, and check whether your home filter is certified for PFAS reduction.
Castle Rock Municipal Water — Water Quality FAQs
Explore This Water System
Washington drinking water report
State-level utility directory, open violations, and PFAS data
PFAS monitoring records for this system
Official EPA UCMR 5 sampling data — 348 records
Official EPA contamination & sampling records
Violation history, PFAS detections, and official source links
Certified water testing labs in Washington
State-certified labs for PFAS, lead, nitrate, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and whole-home filtration guides
About this data
Data sources, update cadence, and accuracy notes
SEATTLE PUBLIC UTILITIES
Nearby water system — compare violations and PFAS records
TACOMA WATER DIVISION CITY OF
Nearby water system — compare violations and PFAS records
Common Questions About This Water System
Does Castle Rock Municipal Water have PFAS monitoring records?
348 official EPA UCMR 5 PFAS sampling records on file
Are there EPA violations on record for Castle Rock Municipal Water?
No health-based violations recorded in EPA SDWIS
How do I get my water tested in Washington?
State-certified labs for PFAS, lead, nitrate, and bacteria testing
What water treatment options address these contaminants?
Reverse osmosis, activated carbon, and whole-home filtration guides with NSF certification data
Where can I find official sampling records for this system?
Official EPA SDWIS violations and UCMR 5 PFAS sampling records with source links
Public drinking water datasets may not include every recent test, private well result, household plumbing issue, or local advisory. Use this page as a starting point, not as a substitute for official guidance, your utility's Consumer Confidence Report, or professional testing.
Water Utility Report summarizes public records from official federal, state, utility, or testing datasets where available. For urgent health or compliance questions, contact your utility, local health department, or the EPA directly. How Water Utility Report uses public drinking water data
Related Pages
Data Sources & Provenance
All data on this page is sourced from official U.S. government or public datasets.
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At a Glance
Service area match is likely but not guaranteed. Your water bill is the most reliable way to confirm your provider.
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Data Sources