This standard sets minimum requirements for ion-exchange membrane (IEM) systems such as electrodialysis (ED), electrodialysis reversal (EDR), electrodialysis metathesis (EDM), and electrodeionization (EDI) for water and reclaimed water treatment systems. Please note that the terms "ion exchange" and "ion-exchange" are used interchangeably with the terms "ion transfer" and "ion-transfer" in this document. Characteristics of ED/EDR membranes are compared to other types of membranes. This is the first edition of this standard and, therefore, there are no major revisions.

The purpose of this standard is to provide a minimum set of requirements for ion-exchange membrane systems used for water and reclaimed water treatment systems. This standard is intended to assist with the design, procurement, installation, and commissioning of ion-exchange membrane systems. This standard can be referenced for design, procurement, installation, and commissioning of ion-exchange membrane systems used for water and reclaimed water treatment systems.

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