CYPRESS SPRINGS SUD N PLANT 1 AND NE PLA

MOUNT VERNON, TX · ~13,698 people served

Check your exact address → MOUNT VERNON overview

100

Excellent

PurityRadar safety score

PWSID

TX0800003

State

Texas

City

MOUNT VERNON

Population served

13,698

Primary source

Surface water

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

PFPeA

4.5 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Unaddressed

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2019 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2019 Resolved

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2019 Resolved

Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2019 Resolved

Monitoring & reporting · Total coliform began Jun 2003 Resolved

Monitoring & reporting · EPA contaminant 0200 began Apr 2003 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Recent enforcement actions

State action · SIA Dec 2025
State action · SIF Dec 2019
State action · SIA Dec 2019
State action · SIE Dec 2019
State action · SOX Nov 2019
State action · SIE Sep 2019
State action · SIA Sep 2019
State action · SIF Aug 2019

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

2 stations · latest Sep 2025

0.176 · max 0.26 mg/L · 2

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 TX0800003 — 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.