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Water system · PWSID AZ0414015

SOMERTON CITY OF

SOMERTON, AZ · ~14,197 people served

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

PWSID

AZ0414015

State

Arizona

City

SOMERTON

Population served

14,197

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

Lithium

79,100 ppt

limit —

No federal limit

Violations & enforcement

155

Violations on record

0

Unaddressed

1

Health-based

102

Enforcement actions

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

Other · EPA contaminant 7000 began Oct 2025 Resolved
Reporting · Lead & Copper Rule began Jul 2024 Resolved
Reporting · Lead & Copper Rule began Mar 2023 Resolved
Reporting · Lead & Copper Rule began Feb 2023 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2023 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2022 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2020 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2020 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2020 Resolved
Reporting · Lead & Copper Rule began Jul 2020 Resolved
Other · EPA contaminant 7000 began Jul 2019 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2018 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SOX Nov 2025
  • State action · SOX Aug 2024
  • State action · SIA Aug 2024
  • EPA/federal action · EFL Apr 2024
  • State action · SOX Jul 2023
  • State action · SOX May 2023
  • State action · SOX May 2023

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

Arsenic

1 station · latest Dec 2021

1.32 · max 1.32 ug/L · 1

Copper

1 station · latest Dec 2021

40.7 · max 40.7 ug/L · 1

Fluoride

1 station · latest Dec 2021

400 · max 400 ug/L · 1

Lead

1 station · latest Dec 2021

4.72 · max 4.72 ug/L · 1

Nitrate

1 station · latest Dec 2021

33,800 · max 33,800 ug/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 AZ0414015 — 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.