TapSafetyReport
B66/100

SAN DIEGO MUD 1 — Water Quality Report 2026

Serving 6,291 people · Texas

Water Source
Groundwater
County
—
System ID
TX0660003
Violations
14

Contaminant Test Results

EPA Violation History

9

Violations (last 5yr)

3

Unresolved

5

Health-Related

TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: June 30, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Treatment technique violation

When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Reporting violation

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

When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: April 15, 2024 – April 26, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2024 – June 30, 2024Enforcement: 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: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2024 – March 31, 2024Enforcement: Formal — state order issued
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2024 – March 31, 2024Enforcement: Formal — state order issued
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2023 – December 31, 2023Enforcement: 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 SAN DIEGO MUD 1

Is SAN DIEGO MUD 1 water safe to drink?

SAN DIEGO MUD 1 water receives a grade of B (66/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.

What contaminants has SAN DIEGO MUD 1 detected?

31 contaminants were tested in SAN DIEGO MUD 1's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does SAN DIEGO MUD 1 have any EPA violations?

Yes, SAN DIEGO MUD 1 has 14 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, TT, RPT. 5 are health-based violations.

How many people does SAN DIEGO MUD 1 serve?

SAN DIEGO MUD 1 serves approximately 6,291 people, Texas.

What type of water does SAN DIEGO MUD 1 provide?

SAN DIEGO MUD 1 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX0660003.

How does SAN DIEGO MUD 1 compare to other utilities in Texas?

SAN DIEGO MUD 1 scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Texas state page for a full comparison of water systems.