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Water system · PWSID CA4410014

SAN LORENZO VALLEY WATER DIST

BOULDER CREEK, CA · ~21,145 people served

Check your exact address → BOULDER CREEK overview
85
Excellent
PurityRadar safety score

PWSID

CA4410014

State

California

City

BOULDER CREEK

Population served

21,145

Primary source

Surface water

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

Latest detections from EPA’s UCMR5 monitoring (through Feb 2024). Levels in parts per trillion (ppt).

Lithium

13,500 ppt

limit —

No federal limit

PFBS

3.4 ppt

limit —

No federal limit

Violations & enforcement

8

Violations on record

2

Unaddressed

4

Health-based

18

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2014. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Jul 2013 Resolved
Monitoring & reporting · Total coliform began Sep 2008 Resolved
Monitoring & reporting · EPA contaminant 2984 began Apr 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 1996 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jan 1993 Resolved
Treatment technique · EPA contaminant 0200 health-based began Jan 1992 Resolved

Recent enforcement actions

  • State action · SOX Jan 2014
  • State action · SFL Jan 2014
  • State action · SOX Nov 2008
  • State action · SIA Oct 2008
  • State action · SOX Aug 2006
  • State action · SIA Nov 2005
  • EPA/federal action · EOX Jun 2004
  • EPA/federal action · EOX Mar 2000

This profile is built from EPA public records for system CA4410014 — 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.