PWSID
CA3710013
State
California
City
LAKESIDE
Population served
35,500
Primary source
SWP
Score history
▼ 13 points — the score moved from 100 to 87 on Jun 18, 2026, as newly published EPA data was incorporated.
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 Apr 2024). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
4.8 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
4.8 ppt
limit 10 ppt
Lithium
16,000 ppt
limit —
PFBS
4.8 ppt
limit —
Violations & enforcement
6
Violations on record
0
Unaddressed
0
Health-based
12
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement May 2024. Official EPA record →
Recent enforcement actions
- State action · SFJ May 2024
- State action · SOX May 2024
- State action · SOX Aug 2022
- State action · SFL Aug 2022
- State action · SOX Jun 2018
- State action · SFJ Apr 2018
- State action · SOX Nov 2005
- State action · SFL Apr 2005
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.
Copper
1 station · latest Jan 2021
Lead
1 station · latest Jan 2021
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 CA3710013 — 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.