PWSID
CA3110010
State
California
City
TAHOE CITY
Population served
5,661
Primary source
Groundwater
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 Nov 2023). Levels in parts per trillion (ppt).
Lithium
10,100 ppt
limit —
Violations & enforcement
1
Violations on record
0
Unaddressed
1
Health-based
11
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Feb 2002. Official EPA record →
Recent enforcement actions
- State action · SIA Feb 2002
- State action · SOX Feb 2002
- State action · SFL Feb 2002
- State action · SOX Feb 2002
- EPA/federal action · EOX Dec 1997
- State action · SFK Sep 1988
- State action · SOX Sep 1988
- State action · SIB Sep 1988
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.
Nitrate
1 station · latest Jul 2020
Arsenic
1 station · latest Jul 2022
Fluoride
1 station · latest Jul 2022
Manganese
1 station · latest Jul 2022
Uranium
1 station · latest Jul 2022
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 CA3110010 — 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.