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Water system · PWSID TX0910085

THOMPSON HEIGHTS WATER SYSTEM

DENISON, TX · ~414 people served

Check your exact address → DENISON overview
100
Excellent
PurityRadar safety score

PWSID

TX0910085

State

Texas

City

DENISON

Population served

414

Primary source

SWP

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

43

Violations on record

2

Unaddressed

4

Health-based

90

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2025. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Monitoring · Lead & Copper Rule began Feb 2025 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2020 Resolved
Other · EPA contaminant 7000 began Jul 2020 Resolved
Other · EPA contaminant 7500 began Jan 2020 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2019 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2018 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2018 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2014 Resolved
Other · EPA contaminant 7500 began Jan 2014 Resolved

Recent enforcement actions

  • State action · SOX Apr 2025
  • State action · SIA Apr 2025
  • State action · SIE Apr 2025
  • State action · SOX Mar 2021
  • State action · SOX Dec 2020
  • State action · SOX Oct 2020
  • State action · SIF Oct 2020
  • State action · SIF Oct 2020

This profile is built from EPA public records for system TX0910085 — 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.