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Huron, CA Tap Water Quality 2026

Water quality report for Huron, CA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Huron's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Huron, City Of PWSID: CA1010044 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. No PFAS was detected.

B

Huron earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: not detected
PFAS tested, none detected
37 violations since 2015, 37 health-based
No violations currently open
Huron's lead level vs. all California community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of California utilities
Population Served
6206
~981 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
37 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2026 Archived
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2026 Archived
TTHM MCL EXCEEDANCE 0.16 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.14 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.138 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.132 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.109 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.102 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.09 MG/L 0.080 mg/L 2019 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2019 Archived
TTHM MCL EXCEEDANCE 0.105 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.12 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.137 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.136 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.1 MG/L 0.080 mg/L 2018 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2018 Archived
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.087 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.0923 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.1063 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.1225 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.1175 MG/L 0.080 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.12 MG/L 0.080 mg/L 2016 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2016 Archived
TTHM MCL EXCEEDANCE 0.1433 MG/L 0.080 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.177 MG/L 0.080 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.074 MG/L 0.060 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.169 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.076 MG/L 0.060 mg/L 2015 Archived
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
TTHM MCL EXCEEDANCE 0.17 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.1593 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.073 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.124 MG/L 0.080 mg/L 2015 Archived
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

37 violations are on record since 2015, of which 37 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Huron, City Of
PWSID CA1010044
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 6,206
Service connections 981
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Huron tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Huron water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Huron? ▼
Huron, City Of (PWSID CA1010044). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2025-10-22. No significant deficiencies were recorded.

What Should Huron Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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