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ARCSA International® has announced the launch of its Rainwater Harvesting System Certification Program, a comprehensive in-field certification program designed to verify that rainwater harvesting systems are designed, installed, and operating in compliance with ARCSA/ASPE/ANSI Standard 63.
ARCSA International will host a new Technical Symposium May 20–21, 2026, at Grundfos Headquarters in Brookshire, Texas. This two-day event will feature advanced training, industry updates, technology displays, and networking opportunities, with full program details coming later this year.
ARCSA International has joined the Reservoir Center for Water Solutions as an official partner, furthering its mission to promote sustainable water practices and expand collaboration within the global water community.
ARCSA International is proud to announce that its Professional Rainwater Harvesting Classes for Designers, Installers, and Inspectors have been officially approved by the Ohio Department of Health for continuing education (CE) credits for registered private water systems contractors.
Ontario, Calif. — IAPMO®, the American Society of Plumbing Engineers (ASPE) and ARCSA International are seeking technical experts to participate in the following consensus bodies: Rainwater Standards Committee and Stormwater Standards Committee.
ARCSA International is pleased to announce the United States General Services Administration (GSA) has accepted its proposed change for the Facilities Standards for the Public Buildings Service (P100), requiring major capital projects of more than 5,000 square feet employing rooftop rainwater catchment and harvesting systems to comply with relevant ARCSA/ASPE/ANSI standards.
Stormwater is increasingly being viewed not simply as runoff to manage, but as a valuable water resource. By capturing, treating, and reusing stormwater, facilities can reduce reliance on municipal supplies while supporting irrigation, cooling, industrial processes, and other non-potable demands.
As water costs rise and concerns around drought resilience and infrastructure grow, stormwater harvesting is creating new opportunities to turn traditional compliance infrastructure into a productive, long-term asset.
ARCSA International has completed Action 5.9 of the National Water Reuse Action Plan, an effort focused on identifying opportunities and addressing barriers to broader adoption of nonresidential onsite rainwater and stormwater catchment systems. The action highlights challenges such as inconsistent regulations, limited technical data, and permitting uncertainty, while outlining how research, policy alignment, workforce development, and system-level verification can help advance rainwater harvesting nationwide effectively.
As communities across the Southeast face heavier rainfall, prolonged drought, and growing pressure on aging infrastructure, rainwater catchment offers a practical path toward greater water resilience. This article explores how well-designed systems can reduce stormwater runoff, supplement water supplies, and support long-term sustainability. It also highlights the importance of proper filtration, storage, treatment, maintenance, and supportive policies in helping rainwater systems perform effectively and gain wider adoption.
As rainwater and stormwater harvesting systems become more widely adopted, the need for clear, reliable standards has never been more important. Standards ensure systems are designed and installed safely, operate effectively, and meet regulatory requirements. They provide confidence to property owners, clarity for code officials, and consistency for industry professionals. Join ARCSA today and help lead the advancement of safe, reliable rainwater and stormwater harvesting practices.
The Campsite at Shield Ranch Rainwater Harvesting (RWH) system was the first building-scale rainwater supply in Texas permitted as a Public Water Supply System (PWSS). Achieving this required extensive coordination with the Texas Commission on Environmental Quality (TCEQ), including submitting exception requests for non-standard storage tanks and a cartridge filter treatment unit, designing a customized treatment train, and engineering the water pressurization and distribution systems.
Rainwater harvesting in greenhouses is a sustainable way to reduce water use, lower costs, and improve plant health. By capturing rain instead of relying on treated water, growers support soil health and cut environmental impact. From large farms to backyard gardens, successful systems around the world show how this simple method can provide year-round irrigation, even in dry regions. With proper setup, it's a practical step toward more resilient and eco-friendly food production.
