PWSID
CA1710004
State
California
City
LAKEPORT
Population served
4,762
Primary source
Surface water
Score history
No change since tracking began Jun 18, 2026.
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 May 2025). Levels in parts per trillion (ppt).
Lithium
15,300 ppt
limit —
Violations & enforcement
1
Violations on record
0
Unaddressed
0
Health-based
5
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Oct 2009. Official EPA record →
Recent enforcement actions
- State action · SOX Oct 2009
- State action · SFL Oct 2009
- EPA/federal action · EOX Mar 2000
- EPA/federal action · EOX Dec 1993
- EPA/federal action · EFJ May 1993
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.
Manganese
1 station · latest Apr 2023
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 CA1710004 — 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.