Rainwater Harvesting Systems Standard Published

The Code Council and CSA Group publish new Rainwater Harvesting Systems Standard for the United States and Canada.

The International Code Council and CSA Group published the CSA B805/ICC 805 Rainwater Harvesting System standard for use in the U.S. and Canada. This new standard addresses the design, materials, installation and operation of residential and commercial rainwater harvesting systems for potable and non-potable water uses.

Approved by both the American National Standards Institute (ANSI) and the Standards Council of Canada (SCC), this standard was developed by an 18-person technical committee made up of an equal number of U.S. and Canadian representatives. The committee consisted of plumbing officials, public health officials, academic researchers, system and product manufacturers, water technology and plumbing engineers, and public safety experts.

Modern rainwater systems can supply water for many uses in and around a building. The CSA B805/ICC 805 standard is closely coordinated with the existing building, plumbing, and health codes and links rainwater harvesting systems with building elements like roofing, plumbing, fire suppression, cooling towers, storm water management and irrigation. The standard also provides tools to establish appropriate water quality based on the cleanliness of the source water and categories of end use.

The resource section of the standard provides key information on the development of water safety plans and techniques for sizing systems. For related system components such as storage tanks,  disinfectant systems and water pumps, the CSA/ICC standard permits evaluation to existing standards from the American Society of Mechanical Engineers, ASTM International, CSA Group, NSF International and others.

The CSA B805/ICC 805 standard is already being used for construction projects, including the expansion of the Vancouver Airport operations building, which involves the collection of runoff from building roofs and for rinse-water use in a car wash facility.

For more information and to purchase the new standard, click here.