NORTH GREEN MUD

HOUSTON, TX · ~4,941 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1010331

State

Texas

City

HOUSTON

Population served

4,941

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

15,400 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Unaddressed

Monitoring & reporting · Lead & Copper Rule began Oct 2018 Resolved

Monitoring & reporting · Total coliform began Feb 2011 Resolved

Monitoring & reporting · Total coliform began Jan 2011 Resolved

Recent enforcement actions

State action · SIA Dec 2025
State action · SOX Aug 2021
State action · SIF Mar 2019
State action · SIA Jan 2019
State action · SIE Jan 2019
State action · SOX May 2015
State action · SIF May 2011
State action · SIA Mar 2011

This profile is built from EPA public records for system TX1010331 — 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.