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San Lucas, CA Tap Water Quality 2026

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

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

Main Utility: San Lucas County Water District PWSID: CA2701676 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.40 ppb, 9% of the action level and no violations are open. PFAS has never been sampled at this system.

B

San Lucas earns a B for water quality

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

Lead: 1.40 ppb — 9% of the federal action level
PFAS never sampled at this system
8 violations since 2015, 6 health-based
No violations currently open
San Lucas's lead level vs. all California community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.40 ppb — 9% of the federal action level
✓ Lower lead than 77% of California utilities
Population Served
312
~94 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
8 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
9% of EPA action level
1.40 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.40 ppb, 9% 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
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Resolved
Nitrate MCL EXCEEDANCE 20 MG/L 10 mg/L 2021 Archived
Nitrate MCL EXCEEDANCE 14 MG/L 10 mg/L 2020 Archived
Nitrate MCL EXCEEDANCE 11 MG/L 10 mg/L 2020 Archived
Nitrate MCL EXCEEDANCE 12 MG/L 10 mg/L 2019 Archived
Nitrate MCL EXCEEDANCE 15 MG/L 10 mg/L 2018 Archived
Nitrate MCL EXCEEDANCE 17 MG/L 10 mg/L 2016 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

8 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 San Lucas County Water District
PWSID CA2701676
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 312
Service connections 94
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is San Lucas tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.40 ppb, 9% of the action level.
Does San Lucas 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 San Lucas? ▼
San Lucas County Water District (PWSID CA2701676). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-02-29. No significant deficiencies were recorded.

What Should San Lucas 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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