HARRIS COUNTY MUD 71

HOUSTON, TX · ~17,079 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1011823

State

Texas

City

HOUSTON

Population served

17,079

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 Aug 2024). Levels in parts per trillion (ppt).

Lithium

49,200 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

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

Monitoring & reporting · Lead & Copper Rule began Jul 2018 Resolved

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

Recent enforcement actions

State action · SIA Dec 2019
State action · SOX Oct 2019
State action · SOX Jul 2019
State action · SIF Jun 2019
State action · SIF Jun 2019
State action · SIE May 2019
State action · SIA May 2019
State action · SIA May 2019

This profile is built from EPA public records for system TX1011823 — 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.