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Water system · PWSID TX2010050

CHALK HILL SUD

HENDERSON, TX · ~4,830 people served

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

PWSID

TX2010050

State

Texas

City

HENDERSON

Population served

4,830

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 Aug 2024). Levels in parts per trillion (ppt).

Lithium

19,200 ppt

limit —

No federal limit

Violations & enforcement

8

Violations on record

2

Unaddressed

3

Health-based

21

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 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 Jun 2021 Resolved
Other · EPA contaminant 7500 began Feb 2016 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2015 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2014 Resolved

Recent enforcement actions

  • State action · SIA Dec 2025
  • State action · SIF Feb 2022
  • State action · SOX Aug 2021
  • State action · SIA Jul 2021
  • State action · SIE Jul 2021
  • State action · SOX Oct 2016
  • State action · SIA Mar 2016
  • State action · SOX Feb 2016

This profile is built from EPA public records for system TX2010050 — 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.