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Mather, CA Tap Water Quality 2026

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

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

Main Utility: Scwa Mather-Sunrise PWSID: CA3410704 Updated: 2026 Q2
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1 violation currently open

Lead was not detected. No PFAS was detected.

C

Mather earns a C for water quality

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

Lead: not detected
PFAS tested, none detected
2 violations since 2015, 1 health-based
1 violation currently open
Mather'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
2044
~9341 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
1
1 open of 2 since 2015

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
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Unaddressed
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 2 recorded since 2015 (1 health-based).

About the Main Water System

Utility Scwa Mather-Sunrise
PWSID CA3410704
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 2,044
Service connections 9,341
Systems serving this area 3
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Mather tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open.
Does Mather water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Mather? ▼
Scwa Mather-Sunrise (PWSID CA3410704), one of 3 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 2026-01-12. No significant deficiencies were recorded.

What Should Mather 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
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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