Epic Cleantec launches modular rainwater reuse system at Greenbuild 2025
Epic Cleantec has introduced its next-generation OneWater Rain system, an onsite water recycling solution designed to capture and purify rainwater and HVAC condensate for reuse in non-potable applications. The launch took place at Greenbuild 2025 in Los Angeles.
The system provides a modular, plug-and-play approach that allows developers and property owners to reuse water for irrigation, toilet flushing, cooling towers and laundry. By transforming rainwater and condensate—two often overlooked water sources—into a sustainable supply, the system aims to reduce reliance on municipal water, lower costs and strengthen building resilience against drought and infrastructure stress.
“Water is the next frontier in sustainable buildings,” said Aaron Tartakovsky, co-founder and CEO of Epic Cleantec, in a press release. “With the OneWater Rain solution, we’re giving developers and building owners a tool to capture value from every drop — turning waste into savings and compliance into opportunity.”
Rainwater reuse has become an increasingly important stormwater management strategy in North America. Studies show that capturing and reusing rainwater can offset 20–40% of a building’s total non-potable water demand, depending on local rainfall and use patterns. In addition to reducing municipal demand, rainwater systems help mitigate flooding, reduce combined sewer overflows and enhance local water resilience, according to a press release.
The system’s AI-enabled platform continuously monitors and optimizes treatment, storage and reuse in real time to ensure efficiency and reliability. Its modular design allows for easy integration into both new construction and retrofit projects, expanding access to decentralized water reuse across property types.
The company has already secured contracts to install the new systems in developments in California and Texas, two states facing growing water scarcity. These projects will support regional water security goals and demonstrate the financial and operational benefits of circular water practices.
The system builds on the company's broader OneWater platform, which includes its greywater and blackwater recycling technologies—recognized as both a TIME Best Invention and a Fast Company World Changing Idea. Together, these systems allow buildings to reuse up to 95% of their water onsite, setting a new standard for sustainable water management in the built environment.
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