STARR WSC

DENISON, TX · ~3,100 people served

Check your exact address → DENISON overview

100

Excellent

PurityRadar safety score

PWSID

TX0910046

State

Texas

City

DENISON

Population served

3,100

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2016. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2015 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2007 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2005 Resolved

Other · EPA contaminant 7500 began Sep 2005 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2005 Resolved

Other · EPA contaminant 7500 began Jun 2005 Resolved

Monitoring & reporting · Total coliform began May 2005 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2005 Resolved

Recent enforcement actions

State action · SOX Feb 2016
State action · SIA Jan 2016
State action · SOX Aug 2015
State action · SO6 Jun 2011
State action · SOX Jan 2011
State action · SOX Jul 2010
State action · SIF Sep 2007
State action · SIE Jul 2007

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Fluoride

1 station · latest Nov 2025

0.3 · max 0.57 mg/L · 20

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system TX0910046 — 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.