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Water system · PWSID AZ0413039

MAYER DWID

CHINO VALLEY, AZ · ~1,400 people served

Check your exact address → CHINO VALLEY overview
100
Excellent
PurityRadar safety score

PWSID

AZ0413039

State

Arizona

City

CHINO VALLEY

Population served

1,400

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

232

Violations on record

1

Unaddressed

9

Health-based

250

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Oct 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Sep 2025 Resolved
Monitoring & reporting · Arsenic began Oct 2024 Resolved
Monitoring · Lead & Copper Rule began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2024 Resolved
Monitoring & reporting · Nitrate began Jul 2024 Resolved
Monitoring & reporting · Arsenic began Jul 2024 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2024 Resolved
Other · EPA contaminant 7000 began Oct 2023 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2023 Resolved

Recent enforcement actions

  • State action · SIF Nov 2025
  • State action · SIF Nov 2025
  • State action · SIF Nov 2025
  • State action · SOX Nov 2025
  • State action · SIF Nov 2025
  • State action · SIF Nov 2025
  • State action · SIF Nov 2025
  • State action · SIA Nov 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

Arsenic

2 stations · latest Jan 2026

0.0054 · max 0.053 mg/L · 31

Copper

2 stations · latest Jan 2026

0.00385 · max 0.029 mg/L · 25

Manganese

2 stations · latest Nov 2025

0.021 · max 0.085 mg/L · 22

Uranium

2 stations · latest Nov 2025

0.00145 · max 0.0043 mg/L · 15

Fluoride

1 station · latest Feb 2024

0.42 · max 0.64 mg/L · 5

Lead

1 station · latest Oct 2023

2.1 · max 2.1 ug/L · 1

Nitrate

1 station · latest Oct 2023

28 · max 28 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 AZ0413039 — 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.