WEST HARRIS COUNTY MUD 9

HOUSTON, TX · ~5,961 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1011798

State

Texas

City

HOUSTON

Population served

5,961

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

Lithium

14,100 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Max contaminant level (MCL) · Gross alpha health-based began Apr 2019 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jan 2019 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Oct 2018 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jul 2018 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2013 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2013 Resolved

Monitoring & reporting · Total coliform began Nov 2010 Resolved

Recent enforcement actions

State action · SFL Aug 2020
State action · SIF Dec 2019
State action · SIF Nov 2019
State action · SIA Sep 2019
State action · SIE Sep 2019
State action · SFJ Sep 2019
State action · SIE Sep 2019
State action · SIA Sep 2019

This profile is built from EPA public records for system TX1011798 — 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.