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Water system · PWSID 090400110

SCUA Bylas

San Carlos, AZ · ~3,160 people served

Check your exact address → San Carlos overview
70
Good
PurityRadar safety score

PWSID

090400110

State

Arizona

City

San Carlos

Population served

3,160

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 70 Jun 18, 2026 · score 70

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

398

Violations on record

2

Unaddressed

65

Health-based

474

Enforcement actions

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

Treatment technique · EPA contaminant 0700 health-based began Oct 2025 Unaddressed
Reporting · EPA contaminant 5200 began Nov 2024 Unaddressed
Treatment technique · EPA contaminant 0200 health-based began May 2025 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Aug 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2023 Resolved
Reporting · Lead & Copper Rule began Jun 2023 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began May 2023 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began May 2023 Resolved
Treatment technique · EPA contaminant 0700 health-based began Mar 2023 Resolved

Recent enforcement actions

  • EPA/federal action · EIA Sep 2025
  • EPA/federal action · EIA Sep 2025
  • EPA/federal action · EOX Jul 2025
  • EPA/federal action · EOX Jun 2025
  • EPA/federal action · EIA Apr 2025
  • EPA/federal action · EIA Apr 2025
  • EPA/federal action · EOX Feb 2025
  • EPA/federal action · EOX Feb 2025

This profile is built from EPA public records for system 090400110 — 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.