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Water system · PWSID CA0310004

PLYMOUTH, CITY OF

PLYMOUTH, CA · ~1,060 people served

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

PWSID

CA0310004

State

California

City

PLYMOUTH

Population served

1,060

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

26

Violations on record

1

Unaddressed

4

Health-based

25

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2023. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2021 Resolved
Monitoring · Lead & Copper Rule began Aug 2017 Resolved
Monitoring · Lead & Copper Rule began Jun 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2017 Resolved
Monitoring · Lead & Copper Rule began Dec 2016 Resolved
Monitoring · Lead & Copper Rule began Apr 2016 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved
Other · EPA contaminant 7000 began Jul 2001 Resolved
Monitoring & reporting · Nitrate began Jan 2000 Resolved
Monitoring & reporting · Thallium began Jan 2000 Resolved

Recent enforcement actions

  • State action · SOX May 2023
  • State action · SOX Dec 2022
  • State action · SOX Dec 2022
  • State action · SFL Dec 2021
  • State action · SOX May 2020
  • State action · SOX Jul 2019
  • State action · SOX Jul 2019
  • State action · SOX Jul 2019

This profile is built from EPA public records for system CA0310004 — 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.