Northumbria Water starts Gosforth water works
Northumbrian Water is spending £250,000 to replace pipe work around Newcastle in a bid to improve water quality.
Around 400 homes in the Gosforth should benefit from the improvements, the company said.
The six-month programme starts on Monday, in the Salters Road area.
Iron pipes will be replaced with non-metallic water mains. Project manager Brian Hardy said the work was "essential" to prevent mains from bursting or leaking.
Temporary traffic lights will be in place for the duration of the works on the busy Salters Road.
"Although there will be some disruption, this will only last for weeks where the benefits of the scheme will last for years," Mr Hardy said.