ARUZ

JUANA DIAZ, PR · ~5,097 people served

Check your exact address → JUANA DIAZ overview

Good

PurityRadar safety score

PWSID

PR0003834

State

Puerto Rico

City

JUANA DIAZ

Population served

5,097

Primary source

Groundwater

Score history

▼ 27 points — the score moved from 100 to 73 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 73

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 May 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

7.1 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFBS

6.4 ppt

limit —

No federal limit

Violations & enforcement

158

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2024. Official EPA record →

Monitoring & reporting · Nitrate began Jan 2024 Resolved

Other · EPA contaminant 7000 began Jul 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2016 Resolved

Monitoring & reporting · EPA contaminant 2015 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 2010 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 2036 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 2032 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 2034 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 2033 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 2005 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 2031 began Apr 2015 Resolved

Recent enforcement actions

State action · SFJ Dec 2024
State action · SOX Jun 2024
State action · SOX Aug 2020
State action · SOX Dec 2018
State action · SFJ Jun 2016
State action · SFJ Feb 2016
State action · SOX Sep 2015
State action · SFJ Jul 2015

This profile is built from EPA public records for system PR0003834 — 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.