The City of Highland has contracted with Insituform Technologies USA, LLC in Chesterfield, Missouri to perform work on the trunk mains in the sanitary sewer system. There are three trunk mains that all of the collection system feed into. The project will utilize CIPP (Cured-In-Place Pipe) technology where an existing pipe is lined with a flexible PVC sock and hardened to take the shape of the host pipe. The new PVC liner will last the lifetime of standard PVC pipe for an estimated 100 years. Manholes will receive a new inside liner also. The technology does not require digging and provides minimal interruption to the customer.
In 2014, the City embarked on an aggressive sanitary sewer rehabilitation program to eliminate as much inflow and infiltration as possible into the system. The first phase of repairs lined 24,700’ of sewer main for $3.5 million. The second phase updated the wastewater sewer plant for $11 million. The third phase will tackle 18,700’ of trunk mains and 50 manholes for $2.2 million.
Work will begin Monday, May 9 and continue for the next year.