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Water & Sewer

A Leader in heavy utility construction

Water and sewer construction is the heart of our business.  We install all residential, commercial and municipal applications including water & sewer mains, service lines, septic systems, lift stations, sewer lagoons, manholes, vaults and more.     

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Water & Sewer Main Construction

With an array of trench shoring, excavators, and attachments we can excavate in excess of 25 feet, excavate thru rock formations, dewater excavations, and install pipe types of all materials and sizes.

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Water & Sewer Service Construction

From municipal, new residential, existing residential or commercial. 

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Pipe Bursting

Reconstruct water or sewer mains by displacing the existing piping (clay, PVC, ductile iron, caste iron, and AC) thru pneumatic bursting or static pull pipe bursting. Pipe bursting has many benefits including trenchless installation, smaller construction foot print, and major reduction on surface disturbances are few key benefits.

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Pipeline Pigging & Pig Locating

Clean existing pipelines with the use of a foam pipeline pig forced through the pipe. The pig can be located with the tracking device embedded in the pig.

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Sewer Manhole Spray on Linings

We perform spray on linings for both concrete surfaces (such as sanitary sewer manholes) and steel surfaces. We are set up to apply the sanitary sewer manhole lining required by the City of Rapid City.

Mainline's crew that was assigned to our project were professional throughout the project and assured that the City's expectations were met and exceeded. In spite of numerous project challenges which included confined site conditions, groundwater/creek seepage, dep bore pits, large cobble to bore through and period of extreme cold weather, Mainline Contracting completed the project with quality workmanship, on time and on budget. 
 

Kyle Mathis, PE,

Last summer we had the experience of reconstruction on our street. Fortunately for the city, Mainline Construction and Complete Concrete made it as painless as possible. I hope the city continues to use these two fine companies often. 

Milton & Rhonda Wright,

Mainline Contracting made an outstanding effort to exceed compliance expectations for the installation of the drainage improvements, crossings and box culverts for the Back 9 holes at the Elkhorn Ridge Golf Course. The site compliance record at this time is outstanding and is clearly a result of good team effort. 

Mainline Contracting Inc did an excellent job working with the residents affected by the project and providing the resources required to overcome the harsh weather conditions. They kept a positive attitude and were able to meet the substantial completion date set for the project without sacrificing the quality or workmanship of the construction. 

Hiene Junge,

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