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Water system · PWSID TX0430055

NORTH COLLIN SUD

MELISSA, TX · ~10,674 people served

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

PWSID

TX0430055

State

Texas

City

MELISSA

Population served

10,674

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

Latest detections from EPA’s UCMR5 monitoring (through Dec 2024). Levels in parts per trillion (ppt).

Lithium

18,000 ppt

limit —

No federal limit

PFBA

6.4 ppt

limit —

No federal limit

Violations & enforcement

14

Violations on record

2

Unaddressed

1

Health-based

35

Enforcement actions

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

Other · EPA contaminant 7500 began Jul 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Treatment technique · Lead & Copper Rule health-based began May 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2018 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2016 Resolved
Other · EPA contaminant 7500 began Jul 2015 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2014 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2013 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2010 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2008 Resolved
Other · EPA contaminant 7500 began Sep 2008 Resolved

Recent enforcement actions

  • State action · SIA Dec 2025
  • State action · SOX Oct 2025
  • State action · SIA Aug 2025
  • State action · SIE Jun 2025
  • State action · SIA Jun 2025
  • State action · SOX Sep 2021
  • State action · SIF Dec 2018
  • State action · SOX Oct 2018

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

0.385 · max 0.5 mg/L · 18

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 TX0430055 — 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.