CITY OF THORNTON WATER SYSTEM

THORNTON, TX · ~530 people served

Check your exact address → THORNTON overview

100

Excellent

PurityRadar safety score

PWSID

TX1470005

State

Texas

City

THORNTON

Population served

530

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

Lithium

57,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2023. Official EPA record →

Other · EPA contaminant 7000 began Jul 2023 Resolved

Other · EPA contaminant 7000 began Jul 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2018 Resolved

Monitoring & reporting · Lead & Copper Rule began Dec 2017 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2017 Resolved

Monitoring · Lead & Copper Rule began Feb 2017 Resolved

Monitoring · Lead & Copper Rule began Oct 2016 Resolved

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

Monitoring & reporting · EPA contaminant 0999 began Jan 2013 Resolved

Other · EPA contaminant 7500 began Nov 2012 Resolved

Other · EPA contaminant 7500 began Aug 2012 Addressed

Max contaminant level (MCL) · Total coliform health-based began Jul 2012 Resolved

Recent enforcement actions

State action · SOX Oct 2023
State action · SIA Oct 2023
State action · SOX Dec 2021
State action · SIA Sep 2021
State action · SIF Feb 2019
State action · SOX Jan 2019
State action · SIE Jan 2019
State action · SIA Jan 2019

This profile is built from EPA public records for system TX1470005 — 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.