B67/100

MUSCOY MWC NO. 1 — Water Quality Report 2026

Serving 13,000 people · California

Water Source

Groundwater

County

—

System ID

CA3610031

Violations

Contaminant Test Results

EPA Violation History

Violations (last 5yr)

Unresolved

Health-Related

TIER 3Resolved

Monitoring Violation

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

When: April 1, 2024 – April 30, 2024Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: March 1, 2024 – March 31, 2024Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: February 1, 2024 – February 29, 2024Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: January 1, 2024 – January 31, 2024Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: December 1, 2023 – December 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: November 1, 2023 – November 30, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: October 1, 2023 – October 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: September 1, 2023 – September 30, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: August 1, 2023 – August 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: July 1, 2023 – July 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: June 1, 2023 – June 30, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: May 1, 2023 – May 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: April 1, 2023 – April 30, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: March 1, 2023 – March 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: February 1, 2023 – February 28, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

TIER 3Resolved

Monitoring Violation

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

When: January 1, 2023 – January 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued

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 MUSCOY MWC NO. 1

Is MUSCOY MWC NO. 1 water safe to drink?

MUSCOY MWC NO. 1 water receives a grade of B (67/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.

What contaminants has MUSCOY MWC NO. 1 detected?

31 contaminants were tested in MUSCOY MWC NO. 1's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does MUSCOY MWC NO. 1 have any EPA violations?

Yes, MUSCOY MWC NO. 1 has 21 EPA violation(s) on record, with the most recent in 2024. Violation types include MON, MR, MCL. 3 are health-based violations.

How many people does MUSCOY MWC NO. 1 serve?

MUSCOY MWC NO. 1 serves approximately 13,000 people, California.

What type of water does MUSCOY MWC NO. 1 provide?

MUSCOY MWC NO. 1 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA3610031.

How does MUSCOY MWC NO. 1 compare to other utilities in California?

MUSCOY MWC NO. 1 scores 67/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our California state page for a full comparison of water systems.