CODES & STANDARDS
There are many codes and standards that are applicable to rainwater harvesting systems.
It’s important to know that a standard is only legally binding if it has been enacted as such by your local legislation. Otherwise, the standard is purely advisory.
Also worth noting is that even though you may run into a regulatory roadblock, there are often alternative compliance pathways—be sure to ask your regulator about this possibility.
American Society of Plumbing Engineers
- ARCSA/ASPE/ANSI 63: Rainwater Catchment Systems
- ASTM E2727–2010e1: Standard Practice for Assessment of Rainwater Quality
American Water Works Association (AWWA)
- AWWA D107: Composite Elevated Tanks for Water Storage
- AWWA D100: Welded Carbon Steel Tanks for Water Storage
- CSA/ICC B805–2018. Rainwater Harvesting Systems
- CAN/CSA-B64.10–11/CAN/CSA-B64.10.1–11: Manual for the selection and installation of backflow prevention devices/Manual for the maintenance and field testing of backflow prevention devices
- CSA B126–13: Water cisterns
Health Canada
- Guidelines for Canadian Drinking Water Quality (published by Health Canada on behalf of the Federal-Provincial-Territorial Committee on Drinking Water}
International Association of Plumbing and Mechanical Officials (IAPMO)
- IAPMO/ANSI Z1002: Rainwater Harvesting Tank
- IAPMO. 2018. Uniform Plumbing Code. Available online at http://epubs.iapmo.org/2018/UPC
National Research Council (NRC)
- National Building Code of Canada 2010
- National Plumbing Code of Canada 2010
- NSF 53–2013: Drinking Water Treatment Units—Health Effects
- NSF 55–2014: Ultraviolet Treatment
- NSF 60: Drinking Water Treatment Chemicals—Health Effects
- NSF 61–2014a: Drinking Water System Components—Health Effects
- NSF 372–2011: Drinking Water System Components—Lead Content
- NSF P151–1995: Health Effects from Rainwater Catchment Systems
