HARRIS COUNTY MUD 239

HOUSTON, TX · ~5,583 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1012392

State

Texas

City

HOUSTON

Population served

5,583

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

Lithium

27,800 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2016. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2015 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Oct 2004 Resolved

Other · EPA contaminant 7000 began Oct 1999 Resolved

Recent enforcement actions

State action · SOX Sep 2016
State action · SIF Jan 2016
State action · SIE Nov 2015
State action · SIA Nov 2015
State action · SOX Jun 2014
State action · SIF Dec 2004
EPA/federal action · EFJ Mar 2000
State action · SOX Mar 2000

This profile is built from EPA public records for system TX1012392 — 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.