PWSID
PR0003904
State
Puerto Rico
City
SANTA ISABEL
Population served
39,884
Primary source
Groundwater
Score history
▼ 33 points — the score moved from 100 to 67 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 Mar 2024). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
10 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
4.9 ppt
limit 10 ppt
PFBA
6.5 ppt
limit —
PFBS
6.4 ppt
limit —
Violations & enforcement
197
Violations on record
0
Unaddressed
4
Health-based
49
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Dec 2024. Official EPA record →
Recent enforcement actions
- State action · SOX Dec 2024
- State action · SFJ Dec 2024
- State action · SFJ Dec 2024
- State action · SFJ Dec 2024
- State action · SOX Sep 2024
- State action · SOX Sep 2024
- State action · SOX Jun 2024
- State action · SOX Jul 2020
This profile is built from EPA public records for system PR0003904 — 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.