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Water system · PWSID TX0310096

EAST RIO HONDO WSC

RIO HONDO, TX · ~24,756 people served

Check your exact address → RIO HONDO overview
73
Good
PurityRadar safety score

PWSID

TX0310096

State

Texas

City

RIO HONDO

Population served

24,756

Primary source

Surface water

Score history

▼ 27 points — the score moved from 100 to 73 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 73

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 Apr 2025). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

5.4 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFOS

Perfluorooctanesulfonic acid

4.3 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

4.5 ppt

limit 10 ppt

Below EPA limit

Lithium

38,600 ppt

limit —

No federal limit

PFHxA

6 ppt

limit —

No federal limit

PFPeA

5.9 ppt

limit —

No federal limit

PFBA

5.7 ppt

limit —

No federal limit

PFHpA

4 ppt

limit —

No federal limit

PFBS

3.5 ppt

limit —

No federal limit

Violations & enforcement

6

Violations on record

0

Unaddressed

2

Health-based

13

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2017. Official EPA record →

Treatment technique · EPA contaminant 0800 health-based began Nov 2016 Resolved
Monitoring & reporting · Lead & Copper Rule began Dec 2013 Resolved
Other · EPA contaminant 7000 began Jul 2008 Resolved
Other · EPA contaminant 7000 began Jan 2007 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 1997 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Recent enforcement actions

  • State action · SIF Feb 2017
  • State action · SIA Feb 2017
  • State action · SOX Jan 2017
  • State action · SIE Nov 2016
  • State action · SOX Mar 2014
  • State action · SOX Jun 2010
  • State action · SOX Jul 2009
  • State action · SIA Jan 2009

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 Oct 2025

0.45 · max 0.81 mg/L · 4

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 TX0310096 — 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.