Water system · PWSID CA1910174
SUBURBAN WATER SYSTEMS-WHITTIER
PWSID
CA1910174
State
California
City
COVINA
Population served
66,045
Primary source
Groundwater
Score history
▼ 55 points — the score moved from 100 to 45 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
13 ppt
limit 4 ppt
PFOA
Perfluorooctanoic acid
6.3 ppt
limit 4 ppt
PFBA
8.6 ppt
limit —
PFPeA
4 ppt
limit —
PFBS
3.9 ppt
limit —
PFHxA
3 ppt
limit —
Violations & enforcement
No violations are on record for this system in EPA’s SDWIS/ECHO data.
This profile is built from EPA public records for system CA1910174 — 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.