Standards and Materials
Pipeline Installation Standards Guide
The Plumbers' Guide is intended as a guide for installation of customer-owned service lines and meter settings. This is only a guide and may not include all applicable codes, regulations, policies and procedures or revisions.
Approved Materials Manual
The Approved Materials Manual is the listing of approved materials for customer service lines and supplement The Plumbers' Guide for all Columbia Gas distribution companies.
2008 revisions to Plumbers Guide