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Water system · PWSID CA5710004

KNIGHTS LANDING SVC. DIST.

WOODLAND, CA · ~944 people served

Check your exact address → WOODLAND overview
85
Excellent
PurityRadar safety score

PWSID

CA5710004

State

California

City

WOODLAND

Population served

944

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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

13

Violations on record

2

Unaddressed

9

Health-based

17

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Max contaminant level (MCL) · Total coliform health-based began Sep 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2015 Resolved
Monitoring & reporting · Total coliform began Aug 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2013 Resolved
Monitoring & reporting · Total coliform began Aug 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Feb 2002 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SOX Jan 2019
  • State action · SOX Oct 2015
  • State action · SFL Oct 2015
  • State action · SOX Sep 2015
  • State action · SOX Aug 2015
  • State action · SOX Jul 2015
  • State action · SOX Sep 2013
  • State action · SOX Aug 2013

This profile is built from EPA public records for system CA5710004 — 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.