MONTGOMERY COUNTY UD 3

HOUSTON, TX · ~3,825 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1700116

State

Texas

City

HOUSTON

Population served

3,825

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 Sep 2025). Levels in parts per trillion (ppt).

Lithium

64,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2017 Resolved

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

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

Monitoring & reporting · EPA contaminant 3014 began Dec 2013 Resolved

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

Recent enforcement actions

State action · SOX Sep 2019
State action · SIA Nov 2017
State action · SOX Jan 2017
State action · SIA Jan 2017
State action · SOX Apr 2015
State action · SIF May 2014
State action · SOX Mar 2014
State action · SIE Mar 2014

This profile is built from EPA public records for system TX1700116 — 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.