CITY OF SOUTH PASADENA

SOUTH PASADENA, CA · ~25,329 people served

Check your exact address → SOUTH PASADENA overview

100

Excellent

PurityRadar safety score

PWSID

CA1910154

State

California

City

SOUTH PASADENA

Population served

25,329

Primary source

SWP

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2000. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Dec 1999 Resolved

Max contaminant level (MCL) · Nitrate health-based began May 1995 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jan 1993 Resolved

Recent enforcement actions

State action · SFL Mar 2000
EPA/federal action · EOX Mar 2000
State action · SOX Jan 2000
State action · SOX Jul 1995
State action · SOX Jul 1995
EPA/federal action · EOX Dec 1993
State action · SOX Oct 1993
EPA/federal action · EFJ May 1993

This profile is built from EPA public records for system CA1910154 — 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.