Water system · PWSID CA3310038
RANCHO CALIFORNIA WATER DISTRICT
PWSID
CA3310038
State
California
City
TEMECULA
Population served
146,147
Primary source
SWP
Score history
▼ 50 points — the score moved from 100 to 50 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 Feb 2024). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
8 ppt
limit 4 ppt
PFOA
Perfluorooctanoic acid
5.4 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
5 ppt
limit 10 ppt
Lithium
24,000 ppt
limit —
PFBA
7.8 ppt
limit —
PFPeA
4.5 ppt
limit —
PFHxA
4.4 ppt
limit —
PFBS
3.5 ppt
limit —
PFHpA
3.3 ppt
limit —
Violations & enforcement
1
Violations on record
0
Unaddressed
0
Health-based
4
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Sep 2009. Official EPA record →
Recent enforcement actions
- State action · SOX Sep 2009
- State action · SFJ Jul 2000
- EPA/federal action · EOX Mar 2000
- EPA/federal action · EOX Dec 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.
Copper
1 station · latest Jul 2021
Arsenic
1 station · latest Feb 2021
Manganese
1 station · latest Jul 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 CA3310038 — 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.