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Water system · PWSID AZ0409026

CITY OF SHOW LOW

SHOW LOW, AZ · ~17,139 people served

Check your exact address → SHOW LOW overview
100
Excellent
PurityRadar safety score

PWSID

AZ0409026

State

Arizona

City

SHOW LOW

Population served

17,139

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

Lithium

18,400 ppt

limit —

No federal limit

Violations & enforcement

523

Violations on record

0

Unaddressed

2

Health-based

300

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 2036 began Jan 2022 Resolved
Monitoring & reporting · EPA contaminant 2046 began Jan 2022 Resolved
Treatment technique · EPA contaminant 0700 health-based began Nov 2021 Resolved
Monitoring & reporting · Arsenic began Jul 2020 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 2019 Resolved
Monitoring & reporting · Nitrate began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jan 2019 Resolved
Monitoring & reporting · Nitrate began Jan 2019 Resolved
Monitoring & reporting · Nitrate began Jan 2019 Resolved
Monitoring & reporting · Nitrate began Jan 2019 Resolved
Monitoring & reporting · Nitrate began Jan 2019 Resolved

Recent enforcement actions

  • State action · SIF Mar 2025
  • State action · SOX Mar 2025
  • State action · SOX Mar 2025
  • State action · SIA Feb 2025
  • State action · SIA Feb 2025
  • State action · SIA Feb 2025
  • State action · SIA Feb 2025
  • State action · SIA Feb 2025

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 Apr 2022

0.00145 · max 0.039 mg/L · 6

Arsenic

1 station · latest Apr 2022

0.0011 · max 0.0013 mg/L · 3

Manganese

1 station · latest Apr 2022

0.016 · max 0.016 mg/L · 3

Lead

1 station · latest Apr 2022

0.0022 · max 0.0022 mg/L · 1

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 AZ0409026 — 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.