Periodically property-owners may receive solicitations from companies offering them insurance or some form of a maintenance agreement to protect them from the costs incurred to repair or replace their water service. Although the Water District maintains the water main, gate valve, and meter serving the property, the portion of water pipe running underground from the property line into the building is the responsibility of the owner. Typically water service lines should last thirty to fifty years. Some of the original cast iron services installed in the 1940’s are more susceptible to rusting out and most services installed since then used copper tubing which does not rust out. One factor that may accelerate the deterioration of copper tubing is a poor or improper grounding of the building’s electrical system. This could result in electrical current flowing through the copper pipe causing electrolysis which may corrode the pipe.
As with any decision to purchase insurance or maintenance agreements, the property owner needs to evaluate the financial risk over time versus the ongoing cost of the agreement. The Water District does not advise or oppose the purchase of any agreement nor does it recommend or endorse any specific agreement or company.