States ›California ›Plumas County ›Delleker

Delleker, CA Tap Water Quality 2026

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

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

Main Utility: Grizzly Lake Csd-Delleker PWSID: CA3200104 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.

B

Delleker earns a B for water quality

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

Lead: not detected
PFAS never sampled at this system
29 violations since 2015, 26 health-based
No violations currently open
Delleker'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
660
~351 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
29 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
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
Combined Uranium MCL EXCEEDANCE 24.1 PCI/L 30 ug/L 2023 Archived
Combined Uranium MCL EXCEEDANCE 24.6 PCI/L 30 ug/L 2022 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
Combined Uranium MCL EXCEEDANCE 28.1 PCI/L 30 ug/L 2021 Archived
Combined Uranium MCL EXCEEDANCE 28.4 PCI/L 30 ug/L 2021 Archived
Combined Uranium MCL EXCEEDANCE 28.9 PCI/L 30 ug/L 2021 Archived
Combined Uranium MCL EXCEEDANCE 27.8 PCI/L 30 ug/L 2021 Archived
Combined Uranium MCL EXCEEDANCE 24.7 PCI/L 30 ug/L 2020 Archived
Combined Uranium MCL EXCEEDANCE 24.2 PCI/L 30 ug/L 2020 Archived
Combined Uranium MCL EXCEEDANCE 24.2 PCI/L 30 ug/L 2020 Archived
Combined Uranium MCL EXCEEDANCE 25.1 PCI/L 30 ug/L 2020 Archived
Combined Uranium MCL EXCEEDANCE 25.9 PCI/L 30 ug/L 2019 Archived
Combined Uranium MCL EXCEEDANCE 27 PCI/L 30 ug/L 2019 Archived
Combined Uranium MCL EXCEEDANCE 26.2 PCI/L 30 ug/L 2019 Archived
Combined Uranium MCL EXCEEDANCE 28.2 PCI/L 30 ug/L 2019 Archived
Combined Uranium MCL EXCEEDANCE 29.2 PCI/L 30 ug/L 2017 Archived
Combined Uranium MCL EXCEEDANCE 29.4 PCI/L 30 ug/L 2017 Archived
Combined Uranium MCL EXCEEDANCE 29.6 PCI/L 30 ug/L 2017 Archived
Combined Uranium MCL EXCEEDANCE 26 PCI/L 30 ug/L 2017 Archived
Combined Uranium MCL EXCEEDANCE 22.9 PCI/L 30 ug/L 2016 Archived
Combined Uranium MCL EXCEEDANCE 21.3 PCI/L 30 ug/L 2016 Archived
Combined Uranium MCL EXCEEDANCE 22.7 PCI/L 30 ug/L 2016 Archived
Combined Uranium MCL EXCEEDANCE 20.5 PCI/L 30 ug/L 2016 Archived
Combined Uranium MCL EXCEEDANCE 21.4 PCI/L 30 ug/L 2015 Archived
Combined Uranium MCL EXCEEDANCE 23.8 PCI/L 30 ug/L 2015 Archived
Combined Uranium MCL EXCEEDANCE 23.2 PCI/L 30 ug/L 2015 Archived
Combined Uranium MCL EXCEEDANCE 21.7 PCI/L 30 ug/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

29 violations are on record since 2015, of which 26 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Grizzly Lake Csd-Delleker
PWSID CA3200104
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 660
Service connections 351
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Delleker tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Delleker 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 Delleker? ▼
Grizzly Lake Csd-Delleker (PWSID CA3200104), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-10-17. No significant deficiencies were recorded.

What Should Delleker 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.

Nearby Cities in California

Chester, Ca Tap Water Quality 2026 Plumas Portola, Ca Tap Water Quality 2026 Plumas Quincy, Ca Tap Water Quality 2026 Plumas Greenville, Ca Tap Water Quality 2026 Plumas Graeagle, Ca Tap Water Quality 2026 Plumas Hamilton Branch, Ca Tap Water Quality 2026 Plumas