Is the tap water in NAGUABO, PR safe to drink?

NAGUABO's tap water receives a grade of A (97/100) from TapWaterSafety.org. No major concerns are flagged in current data. Grades are based on EPA SDWIS, EPA ECHO, EWG Tap Water Database, and the utility's published Consumer Confidence Report.

What contaminants are in NAGUABO tap water?

Public data sources identify the following contaminants in NAGUABO's water supply: . Levels and comparison to EWG health guidelines are listed on the full city page.

Which water utility serves NAGUABO?

NAGUABO is served by RIO BLANCO,VIEQUES,CULEDRA. RIO BLANCO,VIEQUES,CULEDRA serves approximately 80,759 residents.

Tap Water Quality Report

Tap water quality in NAGUABO, PR

Served by RIO BLANCO,VIEQUES,CULEDRA. 80,759 residents.

Average score 97/100

Utilities 1

Population 80,759

97/100

Excellent

ⓘ How did we get this rating?

Quick answer

Tap water in NAGUABO, PR receives a grade of A (97/100) from TapWaterSafety.org. It's served by RIO BLANCO,VIEQUES,CULEDRA. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.

Data sources for this grade: utilities.csv EWG Tap Water Database ⓘ How did we get this rating?

EPA compliance record

Official U.S. EPA records for RIO BLANCO,VIEQUES,CULEDRA (system ID PR0005386) for the last 3 years. Checked 2026-10-07.

No EPA violations in the last 3 years.

0 of 12quarters with a violation

Nolead above EPA action level

Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.

Recommended filters for NAGUABO

Filters matched to the specific contaminants in NAGUABO's water supply.

Carbon block filter certified to NSF/ANSI 42 + 53

$180-$599

A certified carbon block filter handles most baseline water quality concerns.

Aquasana AQ-5300 Under-Sink Filter

$180-$240 NSF 42, 53, 401, 372

Editorial pick · affiliate link coming soon

AquaTru Countertop Reverse Osmosis

$449-$599 NSF 42, 53, 58, 401, 372

Editorial pick · affiliate link coming soon

Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.

Treatment plant contact info

For service issues, water quality concerns, or to request a Consumer Confidence Report from RIO BLANCO,VIEQUES,CULEDRA.

General Contact

AddressCARR. 31 KM. 9.9, NAGUABO, PR 00718

Main phone787-620-2277

Treatment Plant

FacilityRIO BLANCO RIVER

ZIP codes served

NAGUABO's public water systems serve the following ZIP codes:

00718

00765

00771