FORT BEND COUNTY MUD 121

HOUSTON, TX · ~4,932 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX0790393

State

Texas

City

HOUSTON

Population served

4,932

Primary source

GWP

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 Sep 2023). Levels in parts per trillion (ppt).

Lithium

17,100 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring · Lead & Copper Rule began Dec 2024 Resolved

Monitoring & reporting · Total coliform began Nov 2009 Resolved

Monitoring & reporting · Total coliform began Jul 2003 Resolved

Monitoring & reporting · Total coliform began Jun 2003 Resolved

Other · EPA contaminant 7500 began May 2003 Resolved

Monitoring & reporting · Total coliform began Jan 2003 Resolved

Recent enforcement actions

State action · SIF Jun 2025
State action · SOX Feb 2025
State action · SIE Feb 2025
State action · SIA Feb 2025
State action · SOX Aug 2015
State action · SOX Aug 2015
State action · SOX Jan 2011
State action · SIF Jan 2010

This profile is built from EPA public records for system TX0790393 — 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.