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Water system · PWSID AZ0412011

LIBERTY WATER RIO RICO

SIERRA VISTA, AZ · ~17,960 people served

Check your exact address → SIERRA VISTA overview
44
Action needed
PurityRadar safety score

PWSID

AZ0412011

State

Arizona

City

SIERRA VISTA

Population served

17,960

Primary source

Groundwater

Score history

▼ 56 points — the score moved from 100 to 44 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 44

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

PFOS

Perfluorooctanesulfonic acid

24 ppt

limit 4 ppt

Above EPA limit · 6.0×

PFOA

Perfluorooctanoic acid

5.9 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFHxS

Perfluorohexanesulfonic acid

7 ppt

limit 10 ppt

Near EPA limit

Lithium

19,200 ppt

limit —

No federal limit

PFBS

9.5 ppt

limit —

No federal limit

PFBA

5.1 ppt

limit —

No federal limit

PFHxA

4 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

417

Violations on record

0

Unaddressed

3

Health-based

112

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2024. Official EPA record →

Reporting · Lead & Copper Rule began Aug 2024 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2023 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2023 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2017 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2017 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2014 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jul 2014 Resolved

Recent enforcement actions

  • State action · SIA Sep 2024
  • State action · SOX Sep 2024
  • State action · SIA Oct 2023
  • State action · SOX Oct 2023
  • State action · SIA Oct 2018
  • State action · SOX Oct 2018
  • State action · SOX Jul 2016
  • State action · SOX Jan 2016

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

Copper

1 station · latest Jun 2023

0.00915 · max 0.0092 mg/L · 2

Lead

1 station · latest Jun 2023

0.000975 · max 0.001 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 AZ0412011 — 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.