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Water system · PWSID TX1011600

NORTHWEST HARRIS COUNTY MUD 15

HOUSTON, TX · ~6,915 people served

Check your exact address → HOUSTON overview
100
Excellent
PurityRadar safety score

PWSID

TX1011600

State

Texas

City

HOUSTON

Population served

6,915

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

Lithium

41,700 ppt

limit —

No federal limit

Violations & enforcement

1

Violations on record

0

Unaddressed

1

Health-based

8

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2012. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Nov 2011 Resolved

Recent enforcement actions

  • State action · SIA Mar 2012
  • State action · SIA Feb 2012
  • State action · SIE Feb 2012
  • State action · SOX Jan 2012
  • State action · SIF Dec 2011
  • State action · SOX Apr 2000
  • EPA/federal action · EFJ Mar 2000
  • EPA/federal action · EFJ Apr 1980

This profile is built from EPA public records for system TX1011600 — 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.