FAQ: NSF/ANSI/CAN 600 in Relation to Standards NSF/ANSI/CAN 60 and 61

A: NSF/ANSI/CAN 60 covers the health effects of drinking water treatment chemicals.

NSF/ANSI/CAN 61 covers the health effects of drinking water system components.

A: This standard defines the toxicology review procedures for evaluating the potential human health risk of contaminants that may be imparted to drinking water with anticipated use of treatment chemicals (NSF/ANSI/CAN 60) and water distribution system components (NSF/ANSI/CAN 61).

Until 2018, the content now comprising Standard 600 was located in Annexes A, C and D between NSF/ANSI/CAN Standards 60 and 61. Annex A in both standards contained the toxicological risk assessment procedures for establishing pass/fail criteria. On the other hand, Annex C (from NSF/ANSI/CAN 60) and Annex D (from NSF/ANSI/CAN 61) contained the pass/fail criteria.

The joint committees that oversee NSF/ANSI/CAN 60 and NSF/ANSI/CAN 61 decided to separate these sections into their own standard that would serve as a reference standard for all drinking water standards.

This consolidation was intended to make the toxicology data more accessible, as well as to make it easier to update and navigate the pass/fail criteria. This new reference standard was then designated NSF/ANSI/CAN 600.

A: No, it serves as a reference standard.

A: Yes. However, anyone purchasing a copy of NSF/ANSI/CAN 60 or 61 will receive a complimentary copy of NSF/ANSI/CAN 600.

A: Visit the following pages:

NSF/ANSI/CAN 60

• Free 2016 edition of NSF/ANSI 60
• The most recent edition of NSF/ANSI/CAN 60 (for purchase if not an NSF client)

NSF/ANSI/CAN 61

• Free 2016 edition of NSF/ANSI 61
• The most recent edition of NSF/ANSI/CAN 61 (for purchase if not an NSF client)

NSF/ANSI/CAN 600

• The most recent edition of NSF/ANSI/CAN 600 (for purchase if not an NSF client)
• Article: NSF/ANSI/CAN 600 Overview and Updated Health Effects Criteria