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Water system · PWSID TX1011430

HARRIS COUNTY MUD 157

100
Excellent
PurityRadar safety score

PWSID

TX1011430

State

Texas

City

HOUSTON

Population served

13,062

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

PFHxS

Perfluorohexanesulfonic acid

3.7 ppt

limit 10 ppt

Below EPA limit

Lithium

10,400 ppt

limit —

No federal limit

PFHxA

9.2 ppt

limit —

No federal limit

PFPeA

7.8 ppt

limit —

No federal limit

PFBS

4.3 ppt

limit —

No federal limit

Violations & enforcement

2

Violations on record

0

Unaddressed

2

Health-based

9

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2016. Official EPA record →

Max contaminant level (MCL) · Arsenic health-based began Jul 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2015 Resolved

Recent enforcement actions

  • State action · SOX Apr 2016
  • State action · SIF Nov 2015
  • State action · SIF Oct 2015
  • State action · SIA Aug 2015
  • State action · SIE Aug 2015
  • State action · SIE Aug 2015
  • State action · SIA Aug 2015
  • State action · SIF Mar 1982

This profile is built from EPA public records for system TX1011430 — 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.