NORTHWEST HARRIS COUNTY MUD 36

HOUSTON, TX · ~3,648 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1012848

State

Texas

City

HOUSTON

Population served

3,648

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2017. Official EPA record →

Other · EPA contaminant 7000 began Jul 2015 Resolved

Other · EPA contaminant 7500 began Sep 2003 Resolved

Monitoring & reporting · Total coliform began Jul 2003 Resolved

Monitoring & reporting · Total coliform began Jun 2003 Resolved

Monitoring & reporting · Total coliform began May 2003 Resolved

Other · EPA contaminant 7500 began May 2003 Resolved

Monitoring & reporting · Total coliform began Jan 2003 Resolved

Recent enforcement actions

State action · SOX May 2017
State action · SIA Oct 2015
State action · SOX Aug 2015
State action · SOX Aug 2015
State action · SOX Aug 2015
State action · SOX Jan 2011
State action · SIA Oct 2003
State action · SIA Sep 2003

This profile is built from EPA public records for system TX1012848 — 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.