HARRIS COUNTY MUD 43

HOUSTON, TX · ~5,940 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1010565

State

Texas

City

HOUSTON

Population served

5,940

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

11,300 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2023. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2023 Resolved

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

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

Other · EPA contaminant 7000 began Jul 2012 Resolved

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

Recent enforcement actions

State action · SOX Dec 2023
State action · SIF Sep 2023
State action · SIA Jul 2023
State action · SIE Jul 2023
State action · SOX Oct 2014
State action · SOX Oct 2014
State action · SOX Jun 2013
State action · SIA Jun 2013

This profile is built from EPA public records for system TX1010565 — 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.