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Water system · PWSID PR0004604

EXPERIMENTAL

JUANA DIAZ, PR · ~6,427 people served

Check your exact address → JUANA DIAZ overview
55
Fair
PurityRadar safety score

PWSID

PR0004604

State

Puerto Rico

City

JUANA DIAZ

Population served

6,427

Primary source

Groundwater

Score history

▼ 45 points — the score moved from 100 to 55 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 55

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 Aug 2024). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

22 ppt

limit 4 ppt

Above EPA limit · 5.5×

PFOS

Perfluorooctanesulfonic acid

4.7 ppt

limit 4 ppt

Above EPA limit · 1.2×

PFHxA

260 ppt

limit —

No federal limit

PFPeA

110 ppt

limit —

No federal limit

PFBA

54 ppt

limit —

No federal limit

PFBS

42 ppt

limit —

No federal limit

PFHpA

13 ppt

limit —

No federal limit

Violations & enforcement

29

Violations on record

0

Unaddressed

1

Health-based

23

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2023. Official EPA record →

Other · EPA contaminant 7000 began Jul 2020 Resolved
Monitoring & reporting · EPA contaminant 2067 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2020 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2051 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2042 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2065 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2010 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2005 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2037 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2034 began Jan 2019 Resolved
Monitoring & reporting · EPA contaminant 2274 began Jan 2019 Resolved

Recent enforcement actions

  • State action · SFJ May 2023
  • State action · SOX Aug 2020
  • State action · SOX Aug 2019
  • State action · SFJ Jul 2019
  • State action · SOX Jun 2019
  • State action · SOX Jun 2019
  • State action · SOX Jun 2019
  • State action · SOX Sep 2016

This profile is built from EPA public records for system PR0004604 — 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.