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Cazadero, CA Tap Water Quality 2026

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

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

Main Utility: Cazadero Water Company, Inc. (puc) PWSID: CA4900508 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

C

Cazadero earns a C for water quality

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

Lead: not detected
PFAS never sampled at this system
32 violations since 2015, 6 health-based
No violations currently open
Cazadero'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
236
~159 connections
Water Source
Surface water
Groundwater under the direct influence of surface water — SDWIS source code GU
Active Violations
0
32 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
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
105.8% of EPA action level
1,376 ppb
Action level: 1,300 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. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2021 Archived
Barium MONITORING AND REPORTING — 2 mg/L 2021 Archived
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2021 Archived
Chromium MONITORING AND REPORTING — 0.1 mg/L 2021 Archived
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2021 Archived
Mercury MONITORING AND REPORTING — 0.002 mg/L 2021 Archived
Nickel MONITORING AND REPORTING — — 2021 Archived
Nitrite MONITORING AND REPORTING — 1 mg/L 2021 Archived
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2021 Archived
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2021 Archived
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2021 Archived
Selenium MONITORING AND REPORTING — 0.05 mg/L 2021 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020–2023 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020–2023 Archived
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2020 Addressed
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2020 Addressed
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2019 Addressed
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2019 Addressed
— OTHER — — 2019 Archived
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2019 Addressed
— OTHER — — 2019 Archived
— OTHER — — 2018 Archived
— OTHER — — 2018 Archived
Lead and Copper Rule TREATMENT TECHNIQUE — TT 2018 Addressed
— OTHER — — 2018 Archived
— OTHER — — 2018 Archived
— OTHER — — 2017 Archived
— OTHER — — 2017 Archived
— OTHER — — 2017 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2016 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

32 violations are on record since 2015, of which 6 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Cazadero Water Company, Inc. (Puc)
PWSID CA4900508
Water source Surface water — Groundwater under the direct influence of surface water — SDWIS source code GU
Population served 236
Service connections 159
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Cazadero tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Cazadero 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 Cazadero? ▼
Cazadero Water Company, Inc. (Puc) (PWSID CA4900508). Surface water. Groundwater under the direct influence of surface water — SDWIS source code GU
When was this system last inspected? ▼
It was last inspected on 2024-10-09. No significant deficiencies were recorded.

What Should Cazadero 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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