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Water system · PWSID TX0940015

CRYSTAL CLEAR SUD

SAN MARCOS, TX · ~20,766 people served

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

PWSID

TX0940015

State

Texas

City

SAN MARCOS

Population served

20,766

Primary source

SWP

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 Feb 2025). Levels in parts per trillion (ppt).

PFBA

5.6 ppt

limit —

No federal limit

PFPeA

4 ppt

limit —

No federal limit

Violations & enforcement

92

Violations on record

0

Unaddressed

48

Health-based

57

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2020. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2019 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2019 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Apr 2019 Resolved
Other · EPA contaminant 7500 began Mar 2019 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 3014 began Aug 2017 Resolved
Monitoring · Lead & Copper Rule began Jul 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2015 Resolved
Treatment technique · EPA contaminant 0800 health-based began Jun 2015 Resolved

Recent enforcement actions

  • State action · SFO Sep 2020
  • State action · SOX Mar 2020
  • State action · SIA Mar 2020
  • State action · SOX Nov 2019
  • State action · SFJ Sep 2019
  • State action · SIF Sep 2019
  • State action · SIF Sep 2019
  • State action · SIE Sep 2019

This profile is built from EPA public records for system TX0940015 — 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.