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Water system · PWSID TX0660003

SAN DIEGO MUD 1

SAN DIEGO, TX · ~6,291 people served

Check your exact address → SAN DIEGO overview
100
Excellent
PurityRadar safety score

PWSID

TX0660003

State

Texas

City

SAN DIEGO

Population served

6,291

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Nov 2025). Levels in parts per trillion (ppt).

Lithium

66,800 ppt

limit —

No federal limit

Violations & enforcement

15

Violations on record

4

Unaddressed

5

Health-based

36

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →

Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Other · EPA contaminant 7500 began Jun 2025 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Other · EPA contaminant 7500 began Apr 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2024 Resolved
Monitoring · Lead & Copper Rule began Feb 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2024 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2023 Resolved
Other · EPA contaminant 7000 began Jul 2018 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2016 Resolved

Recent enforcement actions

  • State action · SIA Dec 2025
  • State action · SIA Jul 2025
  • State action · SFL Jul 2025
  • State action · SIA Mar 2025
  • State action · SIE Mar 2025
  • State action · SIE Mar 2025
  • State action · SIA Mar 2025
  • State action · SOX Dec 2024

This profile is built from EPA public records for system TX0660003 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.