ARCSA Launches Field Certification Program for Rainwater Harvesting Systems
Key Highlights
- New program verifies full rainwater system performance in real-world conditions
- Field inspections and testing align installations with Standard 63 requirements
- Certification adds third-party validation for contractors, inspectors and regulators
ONTARIO, CA — ARCSA International has launched a new certification program designed to verify how rainwater harvesting systems actually perform in the field—not just how they’re designed on paper.
The Rainwater Harvesting System Certification Program focuses on full-system validation, giving contractors, engineers and inspectors a clearer path to proving compliance with ARCSA/ASPE/ANSI Standard 63.
Moves Beyond Component Checks to Full System Verification
Unlike traditional certifications that focus on individual components, the program evaluates the entire system under real-world operating conditions.
That includes confirming proper design, installation and ongoing performance—areas that directly impact system reliability, water quality and code compliance on the jobsite.
The program applies to a wide range of stakeholders, including designers, installers, inspectors, regulators and commercial system owners.
Field Inspection and Performance Testing Drive Certification
The certification process starts with a review of system design documentation, followed by an on-site inspection to verify installation quality and operational performance.
To meet Standard 63 requirements, systems must demonstrate four core treatment elements: prefiltration, a calming inlet, a floating intake and a skimming overflow device.
Together, these components are designed to deliver a 2- to 5-log reduction in contaminants—making proper installation and system integration critical for performance.
Additional verification includes system capacity, filtration effectiveness, storage integrity and water quality testing performed by qualified laboratories.
Certification Provides Jobsite Documentation and Accountability
Systems that pass inspection receive a Certification of Compliance, along with a field-applied certification label from an authorized inspector.
Each certified installation is documented in a detailed field report and tracked by ARCSA International, creating a record that can be used by inspectors, regulators and project stakeholders.
For contractors, that adds a layer of third-party validation that can support approvals, inspections and long-term system credibility.
Ongoing Renewal Requirements Depend on System Type
Certification is available immediately, with systems eligible upon successful verification.
Potable systems require annual recertification, while non-potable systems must be renewed every two years—ensuring continued performance over time.
The first certified systems under the program are scheduled for May 19, ahead of ARCSA International’s Technical Symposium.
Program Addresses Long-Standing Gap in System-Level Validation
The certification program was developed to close a gap in the rainwater harvesting market—where system-level verification has historically been limited.
By focusing on actual performance instead of design intent alone, the program aims to improve regulatory confidence, support broader code adoption and establish a more consistent standard for system design and installation.
“This program represents a significant advancement for the rainwater harvesting industry,” ARCSA International Executive Director Heather Kinkade said. “By moving beyond component testing to full system verification in the field, we are helping ensure safe, reliable, and standards-compliant rainwater systems while advancing water reuse as a trusted and sustainable solution.”
For more information about the ARCSA International Rainwater Harvesting System Certification Program, visit the ARCSA International at arcsainternational.org, email [email protected].