HARRIS COUNTY MUD 365

HOUSTON, TX · ~4,461 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1013009

State

Texas

City

HOUSTON

Population served

4,461

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

Lithium

35,600 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2025. Official EPA record →

Other · EPA contaminant 7500 began Feb 2025 Unaddressed

Monitoring & reporting · EPA contaminant 3014 began Dec 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2014 Resolved

Recent enforcement actions

State action · SIA Feb 2025
State action · SOX Feb 2024
State action · SIE Feb 2024
State action · SIA Feb 2024
State action · SOX Mar 2015
State action · SIA Feb 2015

This profile is built from EPA public records for system TX1013009 — 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.