Specifications include, but are not limited to: This specification covers Carbon Dioxide (referred to as “PRODUCT” hereafter) used in pH adjustment of water supplies. The product covered by these specifications shall conform to the American Water Works (AWWA) Standard for Carbon Dioxide, AWWA B510-18 or most current version. The product shall not contain any constituents that would cause detriment to feed equipment or cause the treated water to not meet current Federal and State Drinking Water Standards. Manufacturers and bidders must provide in their bid submission proof of ANSI/NSF 60 certification as defined by the American National Standards Institute/National Sanitation Foundation’s Standard 60 - Drinking Water Treatment Chemicals - Health Effects for the PRODUCT bid. Bids for non-certified product will be rejected.