QUAIL VALLEY UTILITY DISTRICT

MISSOURI CITY, TX · ~14,409 people served

Check your exact address → MISSOURI CITY overview

100

Excellent

PurityRadar safety score

PWSID

TX0790028

State

Texas

City

MISSOURI CITY

Population served

14,409

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

14,300 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2019. Official EPA record →

Other · EPA contaminant 7500 began Aug 2018 Resolved

Monitoring & reporting · EPA contaminant 3014 began Aug 2016 Resolved

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

Monitoring & reporting · Total coliform began May 2007 Resolved

Recent enforcement actions

State action · SOX Jul 2019
State action · SIF Jun 2019
State action · SOX Sep 2018
State action · SIA Sep 2018
State action · SIE Aug 2017
State action · SIA Aug 2017
State action · SOX Apr 2014
State action · SIF Sep 2007

This profile is built from EPA public records for system TX0790028 — 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.