PWSID
PR0003824
State
Puerto Rico
City
PONCE
Population served
111,926
Primary source
Surface water
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
9.2 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
13 ppt
limit 10 ppt
PFOA
Perfluorooctanoic acid
4.6 ppt
limit 4 ppt
Lithium
15,540 ppt
limit —
PFPeA
7.4 ppt
limit —
PFHxA
7.2 ppt
limit —
PFBA
7.1 ppt
limit —
PFDoA
3.2 ppt
limit —
PFBS
3 ppt
limit —
Violations & enforcement
582
Violations on record
0
Unaddressed
102
Health-based
217
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →
Recent enforcement actions
- State action · SOX Nov 2025
- State action · SFJ Dec 2024
- State action · SOX Jun 2024
- State action · SFJ Apr 2024
- State action · SOX Feb 2024
- State action · SFJ Oct 2023
- State action · SFJ Oct 2023
- State action · SFJ Oct 2023
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
3 stations · latest May 2023
Arsenic
3 stations · latest Aug 2023
Copper
3 stations · latest Aug 2023
Lead
2 stations · latest Aug 2023
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 PR0003824 — 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.