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Water system · PWSID PR0004094

RIO LOCO

GUANICA, PR · ~1,501 people served

Check your exact address → GUANICA overview
100
Excellent
PurityRadar safety score

PWSID

PR0004094

State

Puerto Rico

City

GUANICA

Population served

1,501

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

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

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

27

Violations on record

0

Unaddressed

1

Health-based

14

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2016. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Sep 2014 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 2013 Resolved
Monitoring & reporting · EPA contaminant 2046 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2036 began Jan 2009 Resolved
Monitoring & reporting · EPA contaminant 2969 began Oct 2005 Resolved
Monitoring & reporting · EPA contaminant 2968 began Oct 2005 Resolved
Monitoring & reporting · EPA contaminant 2380 began Oct 2005 Resolved
Monitoring & reporting · EPA contaminant 2980 began Oct 2005 Resolved
Monitoring & reporting · EPA contaminant 2979 began Oct 2005 Resolved
Monitoring & reporting · EPA contaminant 2981 began Oct 2005 Resolved
Monitoring & reporting · EPA contaminant 2964 began Oct 2005 Resolved

Recent enforcement actions

  • State action · SO0 Jul 2016
  • State action · SOX Mar 2015
  • State action · SFQ Nov 2014
  • State action · SOX Aug 2014
  • State action · SFJ Mar 2014
  • State action · SOX Jun 2009
  • State action · SFJ Aug 2006
  • State action · SOX Mar 2006

This profile is built from EPA public records for system PR0004094 — 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.