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F0/100

GRIZZLY LAKE CSD-DELLEKER — Water Quality Report 2026

Serving 1,314 people · California

Water Source
Groundwater
County
—
System ID
CA3200104
Violations
51

Contaminant Test Results

EPA Violation History

7

Violations (last 5yr)

4

Unresolved

4

Health-Related

TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2024 – October 31, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2024 – September 30, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2023 – September 30, 2023Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2022 – March 31, 2022Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: December 1, 2021 – December 31, 2021Rule: Total Coliform RuleEnforcement: Formal — state order issued
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2021 – December 31, 2021Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2021 – September 30, 2021Enforcement: Formal — state order issuedVerify on EPA.gov

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About GRIZZLY LAKE CSD-DELLEKER

Is GRIZZLY LAKE CSD-DELLEKER water safe to drink?

GRIZZLY LAKE CSD-DELLEKER water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 51 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has GRIZZLY LAKE CSD-DELLEKER detected?

1 contaminants were tested in GRIZZLY LAKE CSD-DELLEKER's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does GRIZZLY LAKE CSD-DELLEKER have any EPA violations?

Yes, GRIZZLY LAKE CSD-DELLEKER has 51 EPA violation(s) on record, with the most recent in 2024. Violation types include MON, MCL, MR. 43 are health-based violations.

How many people does GRIZZLY LAKE CSD-DELLEKER serve?

GRIZZLY LAKE CSD-DELLEKER serves approximately 1,314 people, California.

What type of water does GRIZZLY LAKE CSD-DELLEKER provide?

GRIZZLY LAKE CSD-DELLEKER sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA3200104.

How does GRIZZLY LAKE CSD-DELLEKER compare to other utilities in California?

GRIZZLY LAKE CSD-DELLEKER scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our California state page for a full comparison of water systems.