HARRIS COUNTY MUD 33

HOUSTON, TX · ~5,181 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1011162

State

Texas

City

HOUSTON

Population served

5,181

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

17,800 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2021. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Oct 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2016 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2016 Resolved

Other · EPA contaminant 7500 began Jul 2016 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved

Monitoring & reporting · Total coliform began Apr 2013 Resolved

Monitoring & reporting · Total coliform began Jan 2010 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Recent enforcement actions

State action · SIF Jul 2021
State action · SOX Apr 2021
State action · SIA Apr 2021
State action · SIE Apr 2021
State action · SIF Apr 2017
State action · SOX Apr 2017
State action · SIE Mar 2017
State action · SIA Mar 2017

This profile is built from EPA public records for system TX1011162 — 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.