City of St. Helena
Surface water · Local · 1088 COLLEGE AVENUE
This page shows official EPA compliance records for City of St. Helena, including PFAS monitoring data, violation history, contaminant test results, treatment options, and certified testing lab links for California.
City of St. Helena is a surface water system serving 5,386 residents in St. Helena, California (PWSID: CA2810004). No open health-based violations are recorded in the EPA federal database for this system. EPA UCMR 5 monitoring returned 290 PFAS records for this utility.
At a Glance
CA2810004Intelligence Summary · City of St. Helena
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
5,386
Source Type
Surface water
Ownership
Local
PWSID
CA2810004
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 ECHOViolation History
Sourced from EPA SDWIS. Health-based violations mean a contaminant exceeded the legal limit. Monitoring/Reporting violations mean required test results were not submitted to EPA — not necessarily that the water is unsafe.
Violation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
Resolved1 additional monitoring/reporting failure
Required test submissions not filed with EPA — no contaminant data recorded. These are administrative failures, not health violations.
EPA UCMR 5 monitoring (2023–2025) returned 290 PFAS records for City of St. Helena. 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.
Filtration Recommendations
Based on contaminants found in health-based violations, these treatment methods are most relevant for residents.
Reverse Osmosis
Reverse osmosis (RO) is the most comprehensive point-of-use water treatment technology available for residential use.
Activated Carbon
Activated carbon is the most widely used residential water treatment technology.
What should I do next?
PFAS monitoring records are on file for City of St. Helena. Review the detected compounds, compare them with current regulatory guidance, and check whether your home filter is certified for PFAS reduction.
City of St. Helena — Water Quality FAQs
Explore This Water System
St. Helena water quality overview
All utilities serving St. Helena, violations, and PFAS records
California drinking water report
State-level utility directory, open violations, and PFAS data
PFAS monitoring records for this system
Official EPA UCMR 5 sampling data — 290 records
Official EPA contamination & sampling records
Violation history, PFAS detections, and official source links
Certified water testing labs in California
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
LOS ANGELES-CITY, DEPT. OF WATER & POWER
Nearby water system — compare violations and PFAS records
EAST BAY MUD
Nearby water system — compare violations and PFAS records
Common Questions About This Water System
Does City of St. Helena have PFAS monitoring records?
290 official EPA UCMR 5 PFAS sampling records on file
Are there EPA violations on record for City of St. Helena?
14 health-based violations recorded in EPA SDWIS
How do I get my water tested in California?
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
Which other utilities serve St. Helena?
All EPA-tracked water systems serving St. Helena, CA
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