Is the tap water in RIO GRANDE, PR safe to drink?

RIO GRANDE's tap water receives a grade of B (85/100) 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 RIO GRANDE tap water?

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

Which water utility serves RIO GRANDE?

RIO GRANDE is served by EL YUNQUE. EL YUNQUE serves approximately 68,024 residents.

Tap Water Quality Report

Tap water quality in RIO GRANDE, PR

Served by EL YUNQUE. 68,024 residents.

Average score 85/100

Utilities 1

Population 68,024

85/100

Good

ⓘ How did we get this rating?

Quick answer

Tap water in RIO GRANDE, PR receives a grade of B (85/100) from TapWaterSafety.org. It's served by EL YUNQUE. 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 EL YUNQUE (system ID PR0005296) for the last 3 years. Checked 2026-10-07.

Health-based violation in the last 3 years. A contaminant was above the legal limit or required treatment was not met in at least one quarter.

3 of 12quarters with a violation

Nolead above EPA action level

10/17/2025last state inspection

Rule	Type	Since	Status
Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Required treatment not met	05/01/2025	Open
Surface Water Treatment Rule	Missed testing or reporting	11/01/2024	Open

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 RIO GRANDE

Filters matched to the specific contaminants in RIO GRANDE'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

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AquaTru Countertop Reverse Osmosis

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

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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 EL YUNQUE.

General Contact

AddressROAD #3 KM. 26.2, RIO GRANDE, PR 00745

Main phone787-620-2277

Treatment Plant

FacilityEL YUNQUE

ZIP codes served

RIO GRANDE's public water systems serve the following ZIP codes:

00745