Southern Water is investing in the area's supply after a series of problems and beach closures.
BBC South's environment correspondent Jon Cuthill explains what people can and can't do.
Tim McMahon describes the area as "resilient" as customers in other areas face restrictions on use.
Southern Water estimates it removes 4,500 tonnes of wipes from its sewer network annually.
Southern Water follows South East Water by introducing restrictions on its customers.
The project on the Isle of Sheppey is due to be completed in September 2027, Southern Water says.
Southern Water has been repairing a collapsed sewer in Shirley, Southampton since April.
Southern Water says no "visible debris" has been found on Seabrook beach.
Real-time pollution levels tracked along length of Hampshire's rare chalk stream.
