DENVER — The American Water Works Association (AWWA) is accepting public comments on revisions to two standards, according to a press release.

The public can shared its thoughts on the changes until Sept. 21, stated the release.

Revisions have been proposed to ANSI/AWWA C904-16, Standards for Crosslinked Polyethylene (PEX) Pressure Tubing, 1/2 In. (13 mm) Through 3 In. (76 mm) for Water Service standard, noted the release.

“This standard describes Crosslinked Polyethylene (PEX) pressure tubing made from material having a standard PEX material designation code of PEX 1306, or higher, according to ASTM[1] F876, and intended for use as underground potable water, reclaimed water, and wastewater service lines in sizes ½ in. (13 mm) through 3 in. (76 mm) that conform to a standard dimension ratio of SDR9,” stated the release.

Comments should be submitted in writing to Paul Olson at, reported the release.

The standard regarding ANSI/AWWA D107-16, Composite Elevated Tanks for Water Storage also has proposed changes, shared the release. The standard relates to “composite elevated tanks that use a welded steel tank for watertight containment and a single pedestal concrete support structure.” Modifications include the reorganization of some information and the definition of maximum considered earthquake to conform to the latest ASCE 7.

Comments on the standard should be sent in writing to Frank Kurtz at, noted the release.

You can find the entire releases here and here.