CHELFORD ONE MUD

HOUSTON, TX · ~4,557 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1010767

State

Texas

City

HOUSTON

Population served

4,557

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

Lithium

23,600 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2015. Official EPA record →

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

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

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

Recent enforcement actions

State action · SOX Oct 2015
State action · SIF Feb 2015
State action · SIE Nov 2014
State action · SIA Nov 2014
State action · SOX Jun 1993
State action · SIF Oct 1983

This profile is built from EPA public records for system TX1010767 — 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.