Onsite Non

Onsite non-potable water reuse is one solution that can help communities reclaim, recycle, and then reuse water for non -drinking water purposes. Onsite non-potable water reuse systems (ONWS) capture and treat water sources generated from within or surrounding a building, such as wastewater, greywater, stormwater, or roof collected rainwater.

Research Focus EPA's onsite non-potable water reuse research is focusing on three areas: (1) risk-based modeling to define the necessary level of treatment to safely reuse locally collected wastewater for non-potable purposes in and around buildings; (2) describing and quantifying the microorganisms, both bacterial and viral, found in these ...
Onsite Non

Onsite non-potable water reuse systems (ONWS) capture and treat water sources generated from within or surrounding a building, such as wastewater, greywater, stormwater, or roof collected rainwater. The treated water is then reused onsite or locally for non -drinking purposes, such as toilet flushing, clothes washing, and ornamental plant ...
National Blue Ribbon Commission for Onsite Non-potable Water Systems builds upon years of research and collaboration by leading by water utilities, public health officials, and national research foundations. The materials below include resources to support local implementation of onsite non-potable water reuse programs.

Resources for Onsite Water Programs
Onsite Water Systems build upon years of research and collaboration by leading water utilities, public health officials, and national research foundations. The materials below include resources to support local implementation of onsite non-potable water reuse programs. Check back for updates and publications from the commission.
Onsite non-potable water reuse is water that is collected from onsite sources, such as greywater collected from a sink, appropriately treated, and used for non-potable applications at the single-building or water district scale.

Onsite Water Reuse
Purpose The Onsite Water Reuse Program allows for the collection, treatment, and use of alternate water sources for non-potable applications in individual buildings and at the district-scale. Who Must Comply? Onsite water reuse systems are required for new development projects of 100,000 gross square feet or greater in San Francisco.
What is the WRPG? The award winning " Onsite Non-Potable Water Reuse Practice Guide'' (WRPG) was developed by the William Worthen Foundation, and published in 2018. This project was completed with funding and in-kind support from Google, AIA-CA, Charles Pankow Foundation, Magnusson Klemencic Associates, City of Santa Monica, and the Water Environment & Reuse Foundation. Since publication ...

PDF ONSITE NON
Onsite non-potable water systems are systems that "collect wastewater, stormwater, rainwater, and more, and treat it so that it can be reused in a building, or at the local scale for non-potable needs such as irrigation, toilet flushing, and cooling. These systems are usually integrated into the city's larger water and wastewater system and contribute to a more resilient and sustainable ...






San Francisco's Onsite Water Reuse Program In September 2012, the City and County of San Francisco adopted the Onsite Water Reuse for Commercial, Multi-Family, and Mixed-Use Development Ordinance. Commonly known as the Non-potable Water Ordinance (NPO), it added Article 12C to the San Francisco Health Code, allowing for the collection, treatment, and use of alternate water sources for non ...