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Water system · PWSID AZ0411131

GW SANTA CRUZ WATER CO

MARICOPA, AZ · ~84,000 people served

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

PWSID

AZ0411131

State

Arizona

City

MARICOPA

Population served

84,000

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

Lithium

263,000 ppt

limit —

No federal limit

Violations & enforcement

99

Violations on record

0

Unaddressed

6

Health-based

81

Enforcement actions

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

Max contaminant level (MCL) · Lead & Copper Rule health-based began Aug 2025 Resolved
Other · EPA contaminant 7500 began Jul 2025 Resolved
Other · EPA contaminant 7500 began Jul 2025 Resolved
Other · EPA contaminant 7500 began Jul 2025 Resolved
Other · EPA contaminant 7500 began Jul 2025 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2024 Resolved
Monitoring & reporting · Uranium began Oct 2023 Resolved
Monitoring & reporting · Combined radium-226/228 began Oct 2023 Resolved
Monitoring & reporting · Gross alpha began Oct 2023 Resolved
Monitoring & reporting · EPA contaminant 4020 began Oct 2023 Resolved
Monitoring & reporting · EPA contaminant 4030 began Oct 2023 Resolved

Recent enforcement actions

  • State action · SOX Sep 2025
  • State action · SOX Sep 2025
  • State action · SIA Sep 2025
  • State action · SIE Sep 2025
  • State action · SIF Sep 2025
  • State action · SIF Sep 2025
  • State action · SIA Sep 2025
  • State action · SIA Sep 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

Fluoride

1 station · latest Apr 2026

1.2 · max 30 mg/L · 17

Arsenic

1 station · latest Apr 2026

5 · max 9.3 ug/L · 13

Manganese

1 station · latest Apr 2026

9.2 · max 15 ug/L · 8

Nitrate

1 station · latest Apr 2026

8.2 · max 24 mg/L · 5

Copper

1 station · latest Apr 2022

2.2 · max 2.2 ug/L · 3

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 AZ0411131 — 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.