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Water system · PWSID CA4210700

AMERICAN WATER O&M, LLC - VSFB

VANDENBERG SFB, CA · ~14,971 people served

Check your exact address → VANDENBERG SFB overview
100
Excellent
PurityRadar safety score

PWSID

CA4210700

State

California

City

VANDENBERG SFB

Population served

14,971

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

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

Lithium

10,000 ppt

limit —

No federal limit

Violations & enforcement

8

Violations on record

0

Unaddressed

8

Health-based

15

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2016. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2015 Resolved
Treatment technique · EPA contaminant 0200 health-based began Sep 2010 Resolved
Treatment technique · EPA contaminant 0200 health-based began Sep 2009 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1997 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1993 Resolved

Recent enforcement actions

  • State action · SFL Jan 2016
  • State action · SOX Jan 2016
  • State action · SFL Nov 2015
  • State action · SOX Oct 2015
  • State action · SOX Jul 2015
  • State action · SFL Jun 2015
  • State action · SFL Apr 2015
  • State action · SOX Apr 2015

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Manganese

4 stations · latest Aug 2023

906 · max 960 ug/l · 9

Fluoride

5 stations · latest Aug 2021

0.13 · max 0.64 mg/l · 8

Nitrate

3 stations · latest Aug 2021

0.058 · max 42.8 mg/l as N · 8

Copper

1 station · latest Jan 2020

2.4 · max 2.4 ug/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CA4210700 — 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.