Home/ Directory/ CA/ TOLAS WATERWORKS CO OP

Water system · PWSID NV0000055

TOLAS WATERWORKS CO OP

PASADENA, CA · ~190 people served

Check your exact address → PASADENA overview
100
Excellent
PurityRadar safety score

PWSID

NV0000055

State

California

City

PASADENA

Population served

190

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

167

Violations on record

0

Unaddressed

40

Health-based

132

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2015. Official EPA record →

Max contaminant level (MCL) · Arsenic health-based began Apr 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2015 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2014 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2012 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2012 Resolved

Recent enforcement actions

  • State action · SOX Sep 2015
  • State action · SIA Aug 2015
  • State action · SIE Aug 2015
  • State action · SIE May 2015
  • State action · SIA May 2015
  • State action · SIE Feb 2015
  • State action · SIA Feb 2015
  • State action · SFO Dec 2014

This profile is built from EPA public records for system NV0000055 — 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.