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Water system · PWSID CA2700738

SAN MIGUEL WS #01

ROYAL OAKS, CA · ~100 people served

Check your exact address → ROYAL OAKS overview
85
Excellent
PurityRadar safety score

PWSID

CA2700738

State

California

City

ROYAL OAKS

Population served

100

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

76

Violations on record

0

Unaddressed

62

Health-based

35

Enforcement actions

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

Treatment technique · Lead & Copper Rule health-based began Nov 2025 Addressed
Monitoring & reporting · Lead & Copper Rule began Oct 2021 Addressed
Max contaminant level (MCL) · Nitrate health-based began Jan 2020 Resolved
Max contaminant level (MCL) · Nitrate health-based began Oct 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Oct 2018 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jul 2018 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2018 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Nitrate health-based began Oct 2017 Resolved

Recent enforcement actions

  • State action · SFL Dec 2025
  • State action · SFL Jan 2025
  • State action · SOX Aug 2021
  • State action · SIA Feb 2015
  • State action · SIA Feb 2015
  • State action · SIA Feb 2015
  • State action · SIE Feb 2015
  • State action · SIE Feb 2015

This profile is built from EPA public records for system CA2700738 — 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.