Home/ Directory/ CA/ Mesa Grande - Black Canyon

Water system · PWSID 090605132

Mesa Grande - Black Canyon

Santa Ysabel, CA · ~81 people served

Check your exact address → Santa Ysabel overview
100
Excellent
PurityRadar safety score

PWSID

090605132

State

California

City

Santa Ysabel

Population served

81

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

154

Violations on record

1

Unaddressed

1

Health-based

184

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jan 2023 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began May 2024 Resolved
Other · EPA contaminant 7500 began May 2024 Resolved
Other · Lead & Copper Rule began Apr 2016 Resolved
Monitoring & reporting · Nitrate began Jan 2016 Resolved
Monitoring & reporting · EPA contaminant 0600 began Oct 2013 Resolved
Monitoring & reporting · Total coliform began Dec 2009 Resolved
Monitoring & reporting · Total coliform began Mar 2009 Resolved
Monitoring & reporting · Nitrate began Jan 2009 Resolved
Other · EPA contaminant 7000 began Jul 2006 Resolved
Monitoring & reporting · Nitrate began Jan 2006 Resolved
Other · EPA contaminant 7000 began Jul 2005 Resolved

Recent enforcement actions

  • EPA/federal action · EOX Jun 2025
  • EPA/federal action · EOX Nov 2024
  • EPA/federal action · EOX Aug 2017
  • EPA/federal action · EOX Aug 2017
  • EPA/federal action · EOX May 2017
  • EPA/federal action · EOX May 2017
  • EPA/federal action · EIC Jun 2010
  • EPA/federal action · EOX May 2010

This profile is built from EPA public records for system 090605132 — 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.