By-Pass Pumping Services is another one of our specialties because it is important to be able to divert a sewer line when a service is being repaired. There are many factors that need to be figured out to by-pass a sewer line such as peak flow, sewer pipe size, sewer pipeline size, and access points to the sewer. Most CIPP lining projects and repairs require a by-pass system, which diverts the flow of the manhole downstream of the rehabilitation. By-pass pumping allows pipes to be lined and worked on under dry conditions without disrupting service to customers.