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Water system · PWSID PR0002591

METROPOLITANO

SAN JUAN, PR · ~1,077,332 people served

Check your exact address → SAN JUAN overview
45
Fair
PurityRadar safety score

PWSID

PR0002591

State

Puerto Rico

City

SAN JUAN

Population served

1,077,332

Primary source

Surface water

Score history

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

Jun 18, 2026 · score 100 Jun 18, 2026 · score 45

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

PFOA

Perfluorooctanoic acid

11 ppt

limit 4 ppt

Above EPA limit · 2.7×

PFOS

Perfluorooctanesulfonic acid

5.5 ppt

limit 4 ppt

Above EPA limit · 1.4×

6:2 FTS

49 ppt

limit —

No federal limit

8:2 FTS

15 ppt

limit —

No federal limit

PFDA

7.5 ppt

limit —

No federal limit

PFBA

5.2 ppt

limit —

No federal limit

PFHxA

3.5 ppt

limit —

No federal limit

PFPeA

3.1 ppt

limit —

No federal limit

Violations & enforcement

416

Violations on record

0

Unaddressed

203

Health-based

306

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Monitoring & reporting · EPA contaminant 0200 began Aug 2025 Resolved
Treatment technique · EPA contaminant 0300 health-based began May 2025 Resolved
Treatment technique · EPA contaminant 0300 health-based began May 2025 Resolved
Treatment technique · EPA contaminant 0300 health-based began May 2025 Resolved
Treatment technique · EPA contaminant 0300 health-based began Mar 2025 Resolved
Treatment technique · EPA contaminant 0300 health-based began Dec 2024 Resolved
Monitoring & reporting · EPA contaminant 0200 began Dec 2024 Resolved
Treatment technique · EPA contaminant 0300 health-based began Nov 2024 Resolved
Treatment technique · EPA contaminant 0300 health-based began Nov 2024 Resolved
Monitoring & reporting · EPA contaminant 0200 began Nov 2024 Resolved
Treatment technique · EPA contaminant 0300 health-based began Aug 2024 Resolved
Treatment technique · EPA contaminant 0300 health-based began Aug 2024 Resolved

Recent enforcement actions

  • State action · SFJ Nov 2025
  • State action · SOX Sep 2025
  • State action · SFJ Jul 2025
  • State action · SOX Jun 2025
  • State action · SOX May 2025
  • State action · SFJ May 2025
  • State action · SOX Apr 2025
  • State action · SFJ Feb 2025

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.

ContaminantMedian · max · samples

Nitrate

1 station · latest May 2023

0.986 · max 1.43 mg/l as N · 28

Arsenic

1 station · latest Aug 2023

1.1 · max 2 ug/l · 8

Copper

1 station · latest Aug 2023

2.85 · max 44.8 ug/l · 8

Lead

1 station · latest Aug 2023

0.17 · max 10.2 ug/l · 8

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 PR0002591 — 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.