Water system · PWSID CA1910019
CERRITOS - CITY, WATER DEPT.
PWSID
CA1910019
State
California
City
CERRITOS
Population served
47,475
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 Feb 2025). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
4.8 ppt
limit 4 ppt
Lithium
56,000 ppt
limit —
Violations & enforcement
2
Violations on record
1
Unaddressed
0
Health-based
1
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →
Recent enforcement actions
- State action · SFL Dec 2025
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.
Fluoride
7 stations · latest Feb 2022
Manganese
7 stations · latest Feb 2022
Arsenic
6 stations · latest Feb 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 CA1910019 — 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.