MONTGOMERY COUNTY MUD 89

HOUSTON, TX · ~4,761 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1700717

State

Texas

City

HOUSTON

Population served

4,761

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 2023). Levels in parts per trillion (ppt).

Lithium

28,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2011. Official EPA record →

Other · EPA contaminant 7500 began Mar 2006 Resolved

Monitoring & reporting · Total coliform began Nov 2005 Resolved

Recent enforcement actions

State action · SOX Jan 2011
State action · SIA Feb 2006
State action · SOX Dec 2005
State action · SIE Dec 2005
State action · SIA Dec 2005

This profile is built from EPA public records for system TX1700717 — 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.