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Water system · PWSID CA0707615

DOUBLETREE RANCH WATER SYSTEM

LIVERMORE, CA · ~66 people served

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

PWSID

CA0707615

State

California

City

LIVERMORE

Population served

66

Primary source

Groundwater

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

34

Violations on record

0

Unaddressed

31

Health-based

26

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2020. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2019 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2018 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Apr 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2017 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2016 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jul 2016 Resolved
Max contaminant level (MCL) · Arsenic health-based began Mar 2016 Resolved
Max contaminant level (MCL) · Arsenic health-based began Jan 2016 Resolved
Max contaminant level (MCL) · Arsenic health-based began Oct 2015 Resolved

Recent enforcement actions

  • State action · SOX Dec 2020
  • State action · SFL Oct 2020
  • State action · SOX Aug 2018
  • State action · SFL Oct 2016
  • State action · SFJ Nov 2014
  • State action · SFJ Nov 2014
  • State action · SOX Oct 2010
  • State action · SFJ Sep 2010

This profile is built from EPA public records for system CA0707615 — 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.