SOUTHERN Water says it will improve Portsmouth’s sewer system, as it embarks on a new £20m scheme.
Officials at the company are designing a system to divert rainwater away from the sewers in parts of the city.
The problem of overloaded sewers contributes to discharges into Langstone Harbour during periods of heavy rain.
The company also plans to replace about 15 miles of water mains across Hampshire.
Richard Price, Southern Water’s head of capital delivery, said: ‘The scale of the work completed this financial year is enormous and is bringing major environmental and service improvements, the benefits of which will last long into the future.
‘We look forward to continuing this work and making even more improvements in 2012/13.’