The Code Council adheres to openness and transparency in our Standards development process. All ICC Standards committee meetings are open to the public. Any interested party can participate in committee meetings and can be considered by the committee for membership on any work-group that the committee creates. Interested parties will be notified by email of standards activities related to IS-RCSDI, including committee meetings, sub-group meetings and the availability of standard development documentation. If you wish to be placed on the “interested parties” list for the development of this standard, contact the ICC Secretariat, IS-RCSDI.

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Rainwater Collection System Standard Project

Background and Scope

ICC, as an ANSI-accredited standards developer, provided notice of the intent to develop an ANSI consensus standard for the design and installation of rainwater harvesting systems through the ANSI Project Notification System (PINS).  The scope of the first standard to undergo development, ICC-805, was described as follows in the filing:

BSR/CSA/ICC 805-201x, Standard for Rainwater Collection System Design and Installation (new standard): Applies to the design, installation and maintenance of rainwater collection systems intended to collect, store, treat, distribute, and utilize rainwater for potable and nonpotable applications.

Rainwater Collection System Design and Installation Consensus Committee (IS-RCSDI)

The Rainwater Collection System Design Consensus Committee (IS-RCSDI) was appointed by the ICC Board of Directors in collaboration with CSA in late 2013 and has primary responsibility for the development of the proposed standard.

All standard development is subject to ICC's ANSI Approved standard consensus procedures, Council Policy # 12 and CSA’s standard development procedures.  All meetings of the IS-RCSDI are open to attendance and participation by the public.

  • Click here to view the current committee roster.

Working groups may be formed to address particular topics within the standard and IS-RCSDI committee membership is not required to join any such group. Interested parties should contact the ICC staff secretariat Jessie Sorensen at or the CSA staff secretariat Monica Khalil at to be notified of future meetings and developments related to this project or signup for the Interested Parties List. Neither ICC nor CSA membership is not required to participate.

CSA B805-18/ICC805-2018 Revised November 2019 edition received ANSI Approval as an American National Standard and is available in electronic and print form.

Recent discussions between ICC and CSA have been conducted to plan for the next revision cycle to develop the next edition of the standard.  More news on this subject is anticipated to be posted in the fall of 2021.   

Documents and Links

Documents and links related to the development of the standard, including meeting notices, minutes, agendas, and draft documents are provided below. Click each icon to view document(s).

Note to Word users: To view/download, right click icon, select "save target as" and save to your computer.

Meeting Documents

Public Review Documents

Other Documents