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Water system · PWSID PR0132051

US ARMY, FORT BUCHANAN

GUAYNABO, PR · ~6,411 people served

Check your exact address → GUAYNABO overview
88
Excellent
PurityRadar safety score

PWSID

PR0132051

State

Puerto Rico

City

GUAYNABO

Population served

6,411

Primary source

Surface water

Score history

▼ 12 points — the score moved from 100 to 88 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 88

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 Nov 2023). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

4.6 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

3.5 ppt

limit 10 ppt

Below EPA limit

Violations & enforcement

121

Violations on record

0

Unaddressed

0

Health-based

10

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2020. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jul 2019 Resolved
Monitoring & reporting · EPA contaminant 1085 began Oct 2016 Resolved
Monitoring & reporting · Arsenic began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 1036 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 1075 began Oct 2016 Resolved
Monitoring & reporting · Antimony began Oct 2016 Resolved
Monitoring & reporting · Cadmium began Oct 2016 Resolved
Monitoring & reporting · Barium began Oct 2016 Resolved
Monitoring & reporting · Chromium (total) began Oct 2016 Resolved
Monitoring & reporting · Selenium began Oct 2016 Resolved
Monitoring & reporting · Beryllium began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2980 began Apr 2016 Resolved

Recent enforcement actions

  • State action · SOX Dec 2020
  • State action · SOX Jun 2020
  • State action · SFJ Sep 2019
  • State action · SFJ Feb 2017
  • State action · SOX Dec 2016
  • State action · SFJ Aug 2016
  • State action · SOX Sep 2003
  • State action · SIA Aug 2003

This profile is built from EPA public records for system PR0132051 — 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.