CA4310022
CA
No open health violations

Great Oaks Wc Inc

Groundwater · Private · 20 Great Oaks Blvd., Suite 120

This page shows official EPA compliance records for Great Oaks Wc Inc, including PFAS monitoring data, violation history, contaminant test results, treatment options, and certified testing lab links for California.

PFAS monitoring records (UCMR 5)Available
Health-based violationsNot in current records
Contaminant test data (CCR)Not in current records
Treatment recommendationsNot in current records

Great Oaks Wc Inc is a groundwater system serving 110,088 residents in California (PWSID: CA4310022). No open health-based violations are recorded in the EPA federal database for this system. EPA UCMR 5 monitoring returned 1077 PFAS records for this utility.

At a Glance

CA4310022
Risk levelsafe
Open violationsNone on record
PFAS records1077 UCMR 5 records
Population served110,088
Source waterGroundwater
Data sourceEPA ECHO ↗

Intelligence Summary · Great Oaks Wc Inc

Risk LevelSafe
Open Health ViolationsNone on record
PFAS Records1077 UCMR5 monitoring records on file
Population Served110,088 residents
Source WaterGroundwater
OwnershipPrivate
Overall Risk Level

No Concerns Detected

No Concern
Low
Moderate
High
Critical

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

110,088

Source Type

Groundwater

Ownership

Private

PWSID

CA4310022

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 ECHO

Violation 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.

Monitoring & ReportingLead

Resolved
Jan 2002 – Aug 2004Monitoring/Reporting failure
PFAS MonitoringEPA UCMR 5

EPA UCMR 5 monitoring (2023–2025) returned 1077 PFAS records for Great Oaks Wc Inc. 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 Great Oaks Wc Inc. Review the detected compounds, compare them with current regulatory guidance, and check whether your home filter is certified for PFAS reduction.

Great Oaks Wc Inc — Water Quality FAQs

Explore This Water System

Common Questions About This Water System

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.

EPA ECHO — Water System & Compliance ReportPWSID CA4310022View source
EPA CCR — Consumer Confidence ReportsView source
Last updated: 2026-04-15
High Confidence
Annual refresh cycle

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At a Glance

PWSIDCA4310022
StateCalifornia
Risk Levelsafe
Population Served110,088
Open Health Violations0

Service area match is likely but not guaranteed. Your water bill is the most reliable way to confirm your provider.