AWWA Comment Period for ANSI/AWWA F110 – Ultraviolet Disinfection Systems for Drinking Water May 20, 2022 AWWA solicits public comments on all proposed new AWWA Standards, and on all proposed revisions, reaffirmations, or withdrawals of existing AWWA Standards. The referenced standards project is being considered for approval and the publication of this notice begins the 45-day public comment period for AWWA and ANSI. An electronic public review copy of the proposed standard can be obtained for review during the comment period by emailing ETS Support . Comments must be submitted in writing to the AWWA contact listed below no later than the last day of the comment period specified herein. Such comments shall be specific to the section(s) of the standard under review and include sufficient detail so as to enable the reader to understand the commenter's position, concerns and suggested alternative language, if appropriate. AWWA Comment Period closes on July 4, 2022. Send comments to: Jason Hrdlicka 303.347.6285 phone The review copy will be edited for publication and may also be revised as appropriate based on any comments received during the public comment period. Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes. Final publication of the standard may take several months. When it is available, a notice will be published in the official notice section of Journal - American Water Works Association . The standard becomes an effective AWWA standard on the first day of the month following such publication in Journal - American Water Works Association . SCOPE This standard sets the minimum requirements for closed-vessel ultraviolet (UV) disinfection systems and equipment elements used for drinking water disinfection of Cryptosporidium , Giardia, and viruses. It does not include wastewater, reuse, or advanced oxidation treatment. MAJOR REVISIONS 1. A brief summary of recent and relevant references related to UV validation and dose control have been added to the Foreword. 2. Several definitions were refined, including those related to the validation approaches and UV transmittance. Definitions for bioassay (biodosimetry) and surrogate microorganism were added. 3. Addition of functional test requirements to equipment checks in Sec. 5.2.3. 4.Additions and clarifications to operation and manual requirements in Sec. 5.3.1.