WE KNOW HOW WATER WORKS and we know how to make it work better!

The Trenching Method

The Trenching Method - Water Service Replacement


  • The trenching method involves digging a 12 wide by 36 deep trench between the county water valve and the foundation of the house. Once the county valve with its existing Polybutylene pipe connection has been located under the ground, the old PB pipe is disconnected. The original underground PB pipe is of no value at this point and is abandoned. Its specific location and condition is not needed. New copper pipe is then attached to the county valve and run via the newly dug trench to a predetermined location in the home's foundation where the new copper pipe will enter. It should be understood that this entry location is normally not the same identical location where the old PB pipe entered. A new 1 ½ hole is drilled through the foundation, and the new copper pipe is inserted using a PVC sleeve pipe to protect it. If necessary the existing in-house water meter, pressure reducing valve, and main shutoff valve(s) are moved to the spot where the new pipe comes through the basement foundation. The new copper pipe is then connected to the existing in-house piping system. Foundation holes are appropriately patched with hydraulic cement and tar. The trench is backfilled, tamped, grass seed is planted, and the entire area is covered with straw.

  • We are responsible for notifying Miss Utility to mark the underground utilities before we dig and for the acquisition of the proper plumbing permit and inspection by the county/ plumbing inspector.

Top Areas / Zip Codes we service:

Ellicott City, MD: 21042, 21043
Columbia, MD: 21044, 21045, 21046
Clarksville, MD: 21029
Sykesville, MD: 21784
Dayton, MD: 21036
Fulton, MD: 20759
Olney, MD: 20830



Contact
KEN GRIFFIN PLUMBING SERVICES, INC.
Office: 410-992-5875
Fax: 443-535-0032
Master Plumber 7378
MHIC 124079












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