WaterQ
PR State Report All States
Official Status: March 2026

Is Rio Grande tap water safe to drink?

⚠ Caution Advised
F

Use extra caution — Rio Grande scores 29/100.

Safety Score
29
out of 100

Still not sure if you need a filter in Rio Grande?

Read Decision Guide →

Rio Grande

PR

View PR state report Data updated: Mar 2026

Is Rio Grande tap water safe to drink?

Use extra caution — Rio Grande scores 29/100. This report aggregates EPA drinking water data across 1 local system in Rio Grande. We found 234 total violations (108 unresolved).

Real-Time Environment

Live: 05:45 AM
0mm Precipitation

☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Rio Grande.

Water Quality Impact

✅ Minimal Impact Localized weather conditions may influence test result variability.

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Rio Grande?

Requirement Status
Recommended
🟡
💡

Expert Advice

Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.

Buying a Filter?

Filter or no filter for Rio Grande water? Here's what the data says.

Baby Formula Safety

What new parents in Rio Grande should know about tap water safety.

Homebuyer's Perspective

Water quality is easy to overlook when evaluating a move to Rio Grande, but it can affect plumbing longevity and appliance lifespan. With a score of 29/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.

Property Impact: Requires Mitigation

Health & Family Safety

Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.

View Health Risk Glossary →

Compliance Record for Rio Grande

234
Violations (5yr)
108
Unresolved
1
Contaminants Tracked
0
Exceeding EPA Limit

Based on EPA SDWIS violation records and contaminant test results for all water systems serving Rio Grande.

Frequently Asked Questions

Is Rio Grande tap water safe to drink?

Use extra caution — Rio Grande scores 29/100.

How many water systems serve Rio Grande?

Rio Grande is served by 1 public water system in our latest EPA-backed dataset.

How can I check water quality for my exact address in Rio Grande?

Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Rio Grande.

What is the water quality score for Rio Grande?

The water quality score for Rio Grande is 29 out of 100, based on EPA contaminant data, violation history, and testing results across the 1 system serving the city.

What are the top contaminants in Rio Grande?

The top contaminants detected in Rio Grande include Lead (90th percentile). View detailed information on our contaminants page.

Water Quality Score
29/100
Grade
F
Water Systems
1
Population
68,114

Rio Grande Water Quality Summary

Rio Grande, PR receives a water quality score of 29/100 (Grade F) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.

Rio Grande's water quality score is below the national average, indicating a history of EPA violations or elevated contaminant levels. Residents are encouraged to check their specific water system report and consider additional filtration.

and below the nationwide average of roughly 78/100 across all U.S. states.

Prospective homebuyers looking at properties in the mid-size city of Rio Grande, Puerto Rico, should carefully evaluate the local drinking water situation, as assessments indicate severe quality issues. Since the community is served by only a single water system, any structural or operational deficiencies within this network can have widespread impacts across the entire municipality. Given the failing health and safety metrics of the local supply, residents may need to rely on alternative water sources for drinking and food preparation to avoid using the tap directly.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →

Key Contaminants

Lead (90th percentile)
0.006 / 0.015 mg/L
0 mg/L MCL: 0.015 mg/L

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Water Systems Serving Rio Grande (1)

Related

Compare Rio Grande water quality: View all states · Contaminant library · How we score water quality