Water Quality Report · Updated May 12, 2026

RIO BLANCO,VIEQUES,CULEDRA

Serving 80,759 residents in LAS PIEDRAS, PR and 2 other communities.

National rank 100th percentile

PR rank 100th percentile

Data confidence Low

97/100

Excellent

ⓘ How did we get this rating?

Quick answer

RIO BLANCO,VIEQUES,CULEDRA delivers tap water graded A (97/100) by TapWaterSafety.org. The utility serves approximately 80,759 residents in LAS PIEDRAS, PR using surface water. For questions, the utility can be reached at 787-620-2277.

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

80,759

People served

Cities served

Contaminants detected

Above health guidelines

EPA violations (5 yr)

Is LAS PIEDRAS tap water safe to drink?

RIO BLANCO,VIEQUES,CULEDRA delivers tap water that earns a grade of A (97/100) from TapWaterSafety.org — an excellent rating reflecting minimal contamination and full compliance with health guidelines.

The utility serves 80,759 residents in LAS PIEDRAS and 2 other communities, drawing from surface water.

Detected contaminants are below EWG's health-based guidelines. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.

Quick actions for LAS PIEDRAS residents

📞 Call the utility 787-620-2277 🧪 Get your water tested EPA-certified labs

Contact RIO BLANCO,VIEQUES,CULEDRA

Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.

General Contact

AddressCARR. 31 KM. 9.9, NAGUABO, PR 00718

Main phone787-620-2277

Treatment Plant

FacilityRIO BLANCO RIVER →

Recommended water filters for LAS PIEDRAS

Filters matched to the specific contaminants in this water supply.

Quality carbon block filter (NSF/ANSI 42 + 53)

$80-$240

A general-purpose carbon block filter handles most baseline water quality concerns.

Clearly Filtered Pitcher Filter

$80-$95 NSF 42, 53, 401, P473

Editorial pick · affiliate link coming soon

Aquasana AQ-5300 Under-Sink Filter

$180-$240 NSF 42, 53, 401

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.