December 1997
The second edition of the Plumbing Code Requirements and Sizing Guide for Residential Water Softeners acts as a reference for selecting and installing residential water softeners. The guide offers information on model plumbing codes and plumbing code organizations in the United States, plumbing code requirements for water softeners, guidance for planning installation, detail on sizing procedures, and a sizing form for water softeners.
Prepared by:
NAHB Research Center
13 pages