Can you imagine digging up this yard for a sewer replacement? That is why we did it "Trenchless".

Since 1946 Harry Clark has been serving the Bay Area as a family operated contractor. We are proud to bring to you the latest in technological innovation , new products, combined with old world craftsmanship. Our friendly staff is waiting to serve you.

Why Trenchless?
Trenchless sewer replacement is not only the newest method to replace your sewer but is the best! Here's how it works. An insertion and retrieval pit is dug. The trenchless bursting head is inserted into the old sewer pipe. A heavy cable is pushed through the pipe from the retrieval pit. A special hydraulic ram is attached to the cable and pulls the bursting head through the old pipe. At the same time, new polyethylene pipe is pulled along with the bursting head. Every 20' the pipe is fused together with another special tool. Our system can pull up to 100' of pipe with just two pits.

The new Pipe provides a continuous seamless sewer to the point of connections. Cleanouts are provided along the path of the sewer as needed. This system eliminates the bell and spigot connections every 36" with clay pipe and coupling every 10' with cast iron. Fewer connections mean less potential failure points.

The Polyethylene Story.
Polyethylene was first developed by Phillips Petroleum in 1951. Today's high density materials contain "Marlex Resins" and are more versatile than ever. Polyethylene has been mainly used for industrial gas and chemical pipelines. There are tens of thousands of miles of this pipe in service. Later it was used for domestic water supply and most recently for sanitary sewers. This is the preferred material for municipal sewer replacement in Alameda and Contra Costa Counties. No wonder it's the choice of Harry Clark Plumbing and Heating.

About the Warranty
Harry Clark Plumbing and Heating Inc. warranties from the date of installation for seven years all sewer piping to be free from defects in materials and workmanship. All other work is warrantied for a period of one year.