About Greyter Water Systems

Innovating Water Reuse for a Sustainable Future

At Greyter Water Systems, we believe that reused water is smart water. Since our founding in 2012, we have been dedicated to revolutionizing water reuse by providing out-of-the-box solutions that reduce water consumption in residential, multi-family, and commercial buildings.

By capturing and treating graywater, rainwater, and stormwater, our systems supply water for toilet flushing, irrigation, and cooling towers—helping communities and businesses save water, lower costs, and build sustainably.

Our Mission

We work alongside builders, developers, engineers, architects, and municipalities to create
water-efficient communities. Whether addressing water scarcity challenges or supporting
sustainability goals like LEED certification, our mission is to deliver the most practical, cost-
effective, and efficient water reuse solution

Our Leadership

Our team brings decades of expertise in water resource management and sustainable building solutions.

David Paratore

CEO

John Bell

CCO and Co-Founder

Chris Thompson

President of Commercial
Buildings & Co-Founder

Ray Howard

VP of Engineering

Nate Valeriote

CFO

Dana Morgoch

VP Product

Michael Caldeira

VP Research & Development

Lisa Millin

Director, Human Resources

Why Water Reuse Matters

With over 20% of a home’s water use going to toilets, flushing with perfectly good drinking water simply doesn’t make sense. That’s why we developed the Greyter HOME™, an advanced residential graywater system that captures and treats shower and bath water for toilet flushing, cutting indoor water consumption by 20-25%.

For multi-family and commercial projects, our modular water reuse systems are designed to maximize savings, comply with regulations, and support sustainability initiatives across diverse sectors:

Hotels & Multi-Family
Lower operational costs and boost LEED points

Office & Industrial
Reduce potable water use for cooling and sanitation

Stadiums & Recreation
Reuse rainwater and stormwater for large-scale savings

Universities & Data Centers
Enhance ESG performance and compliance

Firehalls & Public Safety Buildings
Optimize graywater for 24/7 operations

When we founded Greyter in 2012, we asked a simple but important question: Why do we flush toilets with drinking water? Our mission has always been to change that with smart, scalable, and affordable water reuse solutions.

John Bell
Co-Founder

Working with Greyter

We don’t just sell water reuse systems, we partner with our clients to navigate regulations, secure incentives, and integrate the right solutions for each project.

100+ Systems Installed Across North America

Residential System Certified to NSF 350 Class R

Helping Cities and Builders Achieve Sustainability Goals

Based In
Burlington, ON, Canada and Miami, FL, USA

Toll Free
1-844-GREYTER | info@greyter.com