What do the EPA sampling records for Heritage Ranch Csd show?

The EPA records for Heritage Ranch Csd (PWSID: CA4010012) show 15 health-based violations in the SDWIS compliance database. Records on this page are sourced directly from EPA SDWIS and UCMR 5 datasets.

What does 'Detected above MRL' mean in PFAS records?

MRL stands for Minimum Reporting Level — the lowest concentration the testing equipment can reliably measure. 'Detected above MRL' means the analyte was found at a measurable concentration. Detection above MRL is not itself a regulatory violation. EPA has set Maximum Contaminant Levels (MCLs) for PFOA and PFOS at 4 ppt and for PFNA, PFHxS, and HFPO-DA at 10 ppt (April 2024 rule). Detections below those MCLs do not constitute a regulatory violation.

Does this mean California's water is unsafe?

These records reflect what EPA compliance monitoring and UCMR 5 sampling returned. A detection above MRL does not by itself indicate the water is unsafe. A health-based violation in SDWIS means a contaminant exceeded its legal limit during the violation period — it does not necessarily mean current water is out of compliance. For current compliance status, consult Heritage Ranch Csd's most recent Consumer Confidence Report or contact the utility directly.

How do I get an independent water test?

For independent verification, use a state-certified laboratory. Certified labs can test for PFAS (using EPA Method 533 or 537.1), lead, nitrates, bacteria, and dozens of other contaminants. Find certified labs in California at waterutilityreport.com/labs.

Back to Heritage Ranch Csd

Official EPA Records

Heritage Ranch Csd

Official EPA contamination & sampling records · California, CA

PWSID: CA40100122,956 people servedSurface waterData refreshed: 2026-04-16

What official records show

Health violations

All 15 resolved · Most recent: January 2024

PFAS detected (UCMR 5)

None

116 monitoring samples — no detections above MRL

Above MCL level (monitoring)

None

No PFAS above EPA MCL thresholds in monitoring data

EPA compliance records for Heritage Ranch Csd (PWSID: CA4010012) in California, CA show 15 health-based violations recorded in EPA SDWIS, all resolved and no PFAS detections above the minimum reporting level in EPA UCMR 5 monitoring. All records on this page are sourced from EPA SDWIS and the UCMR 5 dataset. This is official monitoring data — not a health risk determination.

Health-Based Violation History

Source: EPA SDWIS (Safe Drinking Water Information System). A health-based violation means a contaminant exceeded the legal Maximum Contaminant Level (MCL) or a required treatment technique was not met during the violation period. Resolved violations indicate the utility returned to compliance.

Contaminant	Type	Violation date	Status
Total Trihalomethanes (TTHMs)	MCL Violation	Jan 2024	Resolved Jun 2024
Total Trihalomethanes (TTHMs)	MCL Violation	Oct 2023	Resolved Jun 2024
Total Trihalomethanes (TTHMs)	MCL Violation	Jul 2023	Resolved Jun 2024
Total Trihalomethanes (TTHMs)	MCL Violation	Apr 2023	Resolved Jun 2024
Haloacetic Acids (HAA5)	MCL Violation	Jan 2023	Resolved Jun 2024
Total Trihalomethanes (TTHMs)	MCL Violation	Jan 2023	Resolved Jun 2024
Total Trihalomethanes (TTHMs)	MCL Violation	Oct 2022	Resolved Jul 2023
Haloacetic Acids (HAA5)	MCL Violation	Oct 2022	Resolved Jul 2023
Total Trihalomethanes (TTHMs)	MCL Violation	Jul 2022	Resolved Jul 2023
Total Trihalomethanes (TTHMs)	MCL Violation	Apr 2022	Resolved Jul 2023
Total Trihalomethanes (TTHMs)	MCL Violation	Oct 2020	Resolved Jul 2023
Total Trihalomethanes (TTHMs)	MCL Violation	Jul 2020	Resolved Jul 2023
Total Trihalomethanes (TTHMs)	MCL Violation	Apr 2020	Resolved Jul 2023
Total Trihalomethanes (TTHMs)	MCL Violation	Jan 2020	Resolved Jul 2023
Total Trihalomethanes (TTHMs)	MCL Violation	Oct 2019	Resolved Jul 2023

Showing 15 health-based violations. View full violation history on EPA ECHO ↗

Official Water Sampling Events (EPA UCMR 5)

EPA UCMR 5 monitoring conducted 4 sampling events at Heritage Ranch Csd. Each event tests water drawn from a designated sampling point for PFAS compounds. Source: EPA Unregulated Contaminant Monitoring Rule 5, 2023–2025.

Sample date	Sampling point	Compounds tested	Detected above MRL
December 2023	EP001	29	None
September 2023	EP001	29	None
June 2023	EP001	29	None
March 2023	EP001	29	None

Sampling events represent distinct official water sample records from EPA UCMR 5. Learn about UCMR 5 methodology ↗

PFAS Monitoring: No Detections Above MRL (EPA UCMR 5)

EPA UCMR 5 monitoring recorded 116 sampling results for Heritage Ranch Csd. No PFAS compounds were detected above the minimum reporting level in any sample. This means measured concentrations — where present — were below the laboratory's minimum quantifiable threshold, not necessarily zero.

View full PFAS monitoring table →

What this does not mean

—Violations do not indicate current non-compliance. A health-based violation that is marked resolved means the utility has returned to compliance per EPA records. Historic violations are shown for transparency, not to imply ongoing risk.
—PFAS detections above MRL are not themselves violations. UCMR 5 monitoring is a surveillance program. Detection does not mean the utility violated a regulation. The 2024 EPA PFAS rule (MCLs for PFOA, PFOS, etc.) has a compliance deadline of 2029.
—This page does not assess health risk. WaterUtilityReport.com presents official government records — we do not make health risk determinations, safety certifications, or compliance judgments. Consult a licensed water quality specialist or physician for health advice.
—Records may be incomplete. EPA SDWIS and UCMR 5 represent what was reported to the EPA. Not all utilities or contaminants are covered. Small systems (<10,000 people) may not have been required to participate in UCMR 5 monitoring.

Independent Verification

Get your water tested by a certified lab

EPA compliance data shows what utilities report to regulators. An independent test from a certified laboratory confirms what is actually coming out of your tap at the point of use. Labs in California can test for PFAS (EPA Method 533 or 537.1), lead, nitrates, bacteria, and more.

Find certified labs in California →PFAS treatment guide Browse all treatment options

Official Records FAQs

Official Data Sources

EPA SDWIS — Compliance & Violations

EPA ECHO: Heritage Ranch Csd Detailed Facility Report

EPA UCMR 5 — PFAS Monitoring Data

EPA UCMR 5 Program Overview

EPA PFAS Rule (April 2024)

EPA PFAS in Drinking Water Rule

Heritage Ranch Csd full report California state report Certified labs in California Data methodology

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