Some roads will close this summer as Anglian Water installs new sewer pipes in Watton.
The new pipe will run from Thetford Road to Watton's Water Recycling Centre and is being installed to serve new homes in the area.
The company will use a technique called directional drilling where pipes are placed underground without the need for digging.
During the work, some roads are set to close as a safety precaution.
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Thetford Road to Watton Road will be shut between July 11 and 15 and Watton Road (Merton Road) will close from July 25 to 29.
Temporary traffic lights will be in place on Brandon Road from July 3 to 31.
Becky Housden, the project's customer experience coordinator, said: “We’re delighted to be able to deliver this project for the residents of Watton.
"Not only will it protect existing residents’ services but it will also protect the area from flooding and pollution in future.
"We would like to thank customers for their patience while we’re working in the area.”
The work is part of a £2.3 million network investment which will also see upgrades to the local pumping station.
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