American Rainwater Catchment Systems Association
The American Rainwater Catchment Systems Association (ARCSA) is to promote sustainable rainwater harvesting practices to help solve potable, non-potable, stormwater and energy challenges throughout the world.
National Association of Home Builders
NAHB is a trade association that helps promote the policies that make housing a national priority. Since 1942, NAHB has been serving its members, the housing industry, and the public at large.
Water Quality Association
The Water Quality Association (WQA) is a not-for-profit international trade association representing the residential, commercial and industrial water treatment industry.
State of Tennessee
Department of Environment and Conservation
- ARCSA, Accredited Professional: ARCSA’s Accredited Professional (AP) Program is designed to recognize professionals in the industry who have achieved an advanced level of competence in designing and installing rainwater harvesting systems.
- ARCSA, Inspector Specialist: ARCSA’s Inspector Specialist (IS) is an advanced rainwater harvesting specialized certification for those who have achieved the knowledge and experience needed to make rainwater harvesting system inspections.
- WQA, Certified Water Specialist: The Water Quality Association’s Certified Water Specialist (CWS) is an in-depth exam focusing on water chemistry and proper treatment methods. Beyond the initial CWS-I, additional specialized exams are available on: Filtration, Reverse Osmosis/Ultrafiltration, Deionization, Disinfection, and Ozone.
- WQA, Certified Installer: The Water Quality Associations Certified Installer (CI) exam is for individuals responsible for planning, installing, and/or servicing water quality improvement products.