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Water system · PWSID AZ0414322

LAGUNA MOBILE HOME AND RV PARK

RANCHO CUCAMONGA, CA · ~450 people served

Check your exact address → RANCHO CUCAMONGA overview
85
Excellent
PurityRadar safety score

PWSID

AZ0414322

State

California

City

RANCHO CUCAMONGA

Population served

450

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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

192

Violations on record

4

Unaddressed

20

Health-based

192

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2026. Official EPA record →

Other · EPA contaminant 7500 began Nov 2025 Unaddressed
Other · EPA contaminant 7000 began Oct 2025 Unaddressed
Other · EPA contaminant 7500 began Dec 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Jan 2024 Unaddressed
Monitoring & reporting · Lead & Copper Rule began Jan 2025 Resolved
Reporting · Lead & Copper Rule began Jan 2025 Resolved
Monitoring · Lead & Copper Rule began Dec 2024 Resolved
Reporting · Lead & Copper Rule began Nov 2024 Resolved
Reporting · EPA contaminant 5200 began Oct 2024 Addressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Addressed
Monitoring & reporting · Lead & Copper Rule began Oct 2022 Resolved
Other · EPA contaminant 7000 began Oct 2022 Resolved

Recent enforcement actions

  • EPA/federal action · EFL Jan 2026
  • State action · SIA Dec 2025
  • State action · SIA Nov 2025
  • State action · SIA Mar 2025
  • State action · SOX Mar 2025
  • State action · SOX Feb 2025
  • State action · SIA Feb 2025
  • State action · SIA Jan 2025

This profile is built from EPA public records for system AZ0414322 — 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.