| AWWA COMMENT PERIOD ON AWWA B407, Liquid Ferric Chloride
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AWWA COMMENT PERIOD ON AWWA B407, Liquid Ferric Chloride

AWWA COMMENT PERIOD ON AWWA B407, Liquid Ferric Chloride
April 1, 2024

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 (ETSsupport@awwa.org). 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 May 20, 2024.

Send comments to:

Nathan Edman, NEdman@awwa.org
303.347.6241 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 Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.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.


This standard describes ferric chloride in aqueous (liquid) form for use in the treatment of potable water, wastewater, and reclaimed water. Applications of the chemical include (1) water softening with lime or a combination of lime and soda ash to improve hardness reduction and coagulation, and (2) water clarification, as a coagulant, followed by settling or filtration.


Major revisions made to the standard in this revision include the following:

1. Minor boilerplate language updates in the following sections:
• I.B. History
• I.C. Acceptance
• III.A. Purchaser Options and Alternatives
• Section 2: References
• Section 3: Definitions
• Section 4: Requirements
• Sec. 4.3.2 Product Certifications
• Sec. 5.12 Notice of Nonconformance
• Sec. 6.1 Marking
• Sec. 6.2 Packaging and Shipping