Water supplies are strained, climates and weather patterns are changing, and populations are moving and growing.

The US Water Alliance has partnered with the Water Research Foundation to establish the National Blue Ribbon Commission for Onsite Non-potable Water Systems to progress innovative solutions for One Water management. Onsite water systems collect wastewater, stormwater, rainwater, and more, treating it so 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 more resilient and sustainable water management by using alternate water sources, reducing valuable potable water used for non-potable purposes, and minimizing strain on wastewater systems.

Project Goals

To support the adoption of onsite non-potable systems, the commission will develop tools and resources based on best practices underway in local communities and world-class research. Over two years, the commission will undertake the following activities to achieve its project goals:

Serve as a forum for collaboration and knowledge exchange.

As the field of onsite non-potable water systems is evolving, the commission is committed to staying abreast of new science and new approaches. We are inclusive of input from interested stakeholders as we learn together and share policy approaches, best management practices, and standards for onsite non-potable systems.

Craft guidance and frameworks for ONWS regulation.

To foster a policy and regulatory environment that supports implementation of onsite non-potable water programs, the commission will develop guidance and model policies that establish a framework for water quality criteria, monitoring and reporting requirements, and operational and permitting strategies that are based on risk-based science and honor local context.

Develop case-making resources for water utilities

Successful onsite non-potable water systems rely on a strong and supportive utility partner. We will capture promising strategies and lessons learned to demonstrate how utilities can use ONWS to meet their One Water goals.

Identify additional research needs in the field.

The commission will identify and develop a research agenda to further advance the field of onsite non-potable water systems.


Review the documents prepared by the commission and other resources for developing onsite non-potable water reuse programs in your community.

Resources for Onsite Non-Potable Water Programs