HARRIS COUNTY MUD 50

CROSBY, TX · ~4,743 people served

Check your exact address → CROSBY overview

100

Excellent

PurityRadar safety score

PWSID

TX1010719

State

Texas

City

CROSBY

Population served

4,743

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

Lithium

10,900 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 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 Oct 2010 Resolved

Other · EPA contaminant 7500 began Nov 2009 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2009 Resolved

Monitoring & reporting · Total coliform began Aug 2007 Resolved

Recent enforcement actions

State action · SOX Jul 2015
State action · SIF Jan 2015
State action · SIE Nov 2014
State action · SIA Nov 2014
State action · SO0 Feb 2011
State action · SOX Apr 2010
State action · SIE Oct 2009
State action · SIA Oct 2009

This profile is built from EPA public records for system TX1010719 — 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.