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Big Creek, CA Tap Water Quality 2026

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

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

Main Utility: Big Creek Community Serv Dist PWSID: CA1000005 Updated: 2026 Q2
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1 violation currently open

Lead is 8.70 ppb, 58% of the action level. PFAS has never been sampled at this system.

D

Big Creek earns a D for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 8.70 ppb — 58% of the federal action level
PFAS never sampled at this system
15 violations since 2015, 13 health-based
1 violation currently open
Big Creek's lead level vs. all California community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 8.70 ppb — 58% of the federal action level
✓ Lower lead than 5% of California utilities
Population Served
81
~67 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
1
1 open of 15 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
58% of EPA action level
8.70 ppb
Action level: 15 ppb
The 90th-percentile lead result is 8.70 ppb, 58% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
Consumer Confidence Rule OTHER — — 2024 Addressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.07 MG/L 0.060 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.088 MG/L 0.060 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.119 MG/L 0.060 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.099 MG/L 0.060 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.099 MG/L 0.060 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.089 MG/L 0.060 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.082 MG/L 0.060 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.065 MG/L 0.060 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.075 MG/L 0.060 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.075 MG/L 0.060 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.075 MG/L 0.060 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.076 MG/L 0.060 mg/L 2015 Resolved
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

1 violation remains open, out of 15 recorded since 2015 (13 health-based).

About the Main Water System

Utility Big Creek Community Serv Dist
PWSID CA1000005
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 81
Service connections 67
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Big Creek tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 8.70 ppb, 58% of the action level.
Does Big Creek water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Big Creek? ▼
Big Creek Community Serv Dist (PWSID CA1000005), one of 2 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2025-10-28. No significant deficiencies were recorded.

What Should Big Creek Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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