CHELFORD CITY MUD

HOUSTON, TX · ~8,917 people served

Check your exact address → HOUSTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1010782

State

Texas

City

HOUSTON

Population served

8,917

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

Lithium

17,900 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 · EPA contaminant 3014 began Apr 2011 Unaddressed

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

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

Monitoring & reporting · Nitrate began Jan 2013 Resolved

Monitoring & reporting · Nitrate began Jan 2011 Resolved

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

Recent enforcement actions

State action · SOX Oct 2015
State action · SOX Mar 2015
State action · SIA Feb 2015
State action · SIF Feb 2015
State action · SIE Nov 2014
State action · SIA Nov 2014
State action · SIF Oct 2014
State action · SIF Oct 2014

This profile is built from EPA public records for system TX1010782 — 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.