Plumbers -  Plumbing
St Helena, Napa Valley, San Francisco North Bay, Ca. USA 94574

 or modified, the designer and contractor need to consult the local plumbing code and obtain a building permits prior to construction.[3][4] Even replacing an existing water heater may require a permit and inspection of the work. National and local fire codes should be integrated in the design phase of the water system too to prevent "failure comply with regulations" notices. Some areas of the United States require on-site water reserves of potable and fire water by law.

Also See:

Building Supplies
Contractors Guide
Plumbing Drains & Sewer Cleaning
Plumbing Fixtures, Parts & Supplies

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