What is the OneWater Rain System?
Introducing the OneWater Rain System by Epic Cleantec — a smart, sustainable solution for onsite water recycling in the built environment. This innovative system captures, treats, and reuses rainwater and AC condensate, turning what would be waste into a valuable resource. It’s designed to simplify water reuse by combining advanced filtration and disinfection into one seamless platform. The goal? To reduce dependence on municipal water supplies while meeting regulatory standards and supporting sustainability goals. Whether it’s a commercial building, multifamily residential, or mixed-use development, the OneWater Rain System fits right in.
Main Benefits of the OneWater Rain System
Here’s what makes this system stand out:
- Up to 95% reduction in water demand and utility fees — that’s huge savings.
- Creates three sustainable outputs from wastewater: recycled water for non-potable uses, recovered energy from wastewater heat, and high-quality soil amendments.
- Advanced treatment process including collection, first flush diversion, storage, filtration, and disinfection.
- UV reactors deliver a validated dose (>40 mJ/cm²) to inactivate pathogens like bacteria, protozoa, and viruses, with optional chlorine for secondary disinfection.
- Models available: OWR-20, OWR-40, OWR-60, OWR-80 — processing from 20 up to 80 gallons per day.
- Remote monitoring and control with ethernet and optional cellular data, plus PLC & HMI controllers; BMS and SCADA integration available.
How Does the Treatment Process Work?
The process starts with rooftop rainwater and AC condensate collection. The first flush diverter sends the initial runoff — which can carry dust, animal droppings, or debris — straight to the storm drain, keeping the system cleaner. Then, the water is stored in a cistern that acts as a buffer, allowing solids to settle and providing a reserve for treatment. Filtration removes fine sediments and particulates, protecting equipment and ensuring water clarity. Finally, ultraviolet (UV) reactors disinfect the water, making it safe for approved non-potable uses. Sometimes, chlorine is added as a backup disinfection step. It’s a well-thought-out, multi-step process that keeps things running smoothly.
Who Can Benefit from the OneWater Rain System?
This system is especially suited for commercial, industrial, multifamily residential, and mixed-use developments. If a project needs to collect and treat rainwater and AC condensate for onsite reuse, this is a perfect fit. It’s flexible enough to handle different scales and types of buildings, making it a versatile choice for developers and property managers looking to boost sustainability without compromising on water quality or regulatory compliance.
What Can You Use the Treated Water For?
The treated water from the OneWater Rain System is approved for a variety of non-potable uses, including toilet flushing, irrigation, cooling tower makeup, and clothes washing. Interestingly, a growing number of states are even allowing treated rainwater to be used for drinking purposes, which speaks volumes about the system’s reliability and safety. So, it’s not just about saving water — it’s about creating a renewable water source that can support many everyday needs.
Project Impact: Supporting Sustainable Development Goals
- SDG 6: Clean Water and Sanitation — by reducing water demand and promoting reuse.
- SDG 11: Sustainable Cities and Communities — through innovative onsite water recycling solutions.
- SDG 12: Responsible Consumption and Production — by cutting down on municipal water use and waste.
- SDG 13: Climate Action — by recovering energy from wastewater heat and lowering environmental impact.
- SDG 15: Life on Land — by producing high-quality soil amendments that support healthy ecosystems.
Control and Monitoring Features
Every OneWater Rain System model comes equipped with an ethernet connection and the option for cellular data, allowing for remote monitoring and control. The system uses a PLC & HMI controller for smooth operation, and can be integrated with building management systems (BMS) and SCADA for advanced oversight. Data logging is built-in, so operators can keep an eye on performance and maintenance needs without being onsite. It’s all about making water reuse hassle-free and reliable.
