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Water system · PWSID PR0005386

RIO BLANCO,VIEQUES,CULEDRA

NAGUABO, PR · ~80,759 people served

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

PWSID

PR0005386

State

Puerto Rico

City

NAGUABO

Population served

80,759

Primary source

Surface water

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

99

Violations on record

0

Unaddressed

24

Health-based

82

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2021. Official EPA record →

Treatment technique · EPA contaminant 0300 health-based began Jun 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2020 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2020 Resolved
Other · EPA contaminant 7000 began Jul 2020 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Apr 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2020 Resolved
Treatment technique · EPA contaminant 0300 health-based began Mar 2020 Resolved
Monitoring & reporting · EPA contaminant 0200 began Feb 2020 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jan 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2019 Resolved
Treatment technique · EPA contaminant 0300 health-based began Jul 2019 Resolved

Recent enforcement actions

  • State action · SOX Jul 2021
  • State action · SFJ Jun 2021
  • State action · SOX Dec 2020
  • State action · SOX Dec 2020
  • State action · SOX Jul 2020
  • State action · SOX Apr 2020
  • State action · SFQ Apr 2020
  • State action · SOX Mar 2020

This profile is built from EPA public records for system PR0005386 — 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.