HARRIS COUNTY MUD 165

HOUSTON, TX · ~40,503 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1012187

State

Texas

City

HOUSTON

Population served

40,503

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

Latest detections from EPA’s UCMR5 monitoring (through Mar 2025). Levels in parts per trillion (ppt).

Lithium

15,700 ppt

limit —

No federal limit

PFPeA

4.7 ppt

limit —

No federal limit

PFHxA

4.1 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2019. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Apr 2019 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2014 Resolved

Recent enforcement actions

State action · SOX Jun 2019
State action · SIA Jun 2019
State action · SOX Mar 2015
State action · SIA Feb 2015

This profile is built from EPA public records for system TX1012187 — 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.