PPI - TN-44
LONG-TERM RESISTANCE OF AWWA C906 POLYETHYLENE (HDPE) PIPE TO POTABLE WATER DISINFECTANTS
| Organization: | PPI |
| Publication Date: | 1 October 2022 |
| Status: | active |
| Page Count: | 8 |
scope:
INTRODUCTION
On March 23, 2021, the AWWA 263 Committee (American Water Works Association) reached consensus and approved revisions to ANSI/AWWA C906-151. The updated standard was published and became effective on November 1, 2021. For potable water applications, AWWA C906-21 requires the use of only PE4710 (HDPE) compounds with the highest oxidative resistance performance class, CC3.
This Technical Note provides guidance on the use of HDPE in potable water piping systems with chlorine or chloramine as a secondary disinfectant. The use of Chlorine dioxide (ClO2) as a secondary disinfectant is not covered by this technical note. At this time, HDPE is not recommended in applications with ClO2 as a secondary disinfectant because further research is needed.
1 AWWA C906-21, Polyethylene (PE) Pressure Pipe and Fittings, 4 In. Through 65 In. (100 mm Through 1,650 mm), for Waterworks, Denver, CO
Document History
