"We don't need to provide a whole sewerage network for the city, for example, when 10% of it is covered by informal providers … We should see what existing providers can do and try to make a mix of services that can be progressively improved and help deliver solutions to all," he said.
In 1855 water and sewerage provision for the entire built-up area were brought under the control of the Metropolitan Board of Works.
Ms. Toussant said she wanted access to municipal records so she could compare the $3,000 annual sewerage rate for her restaurant with others in town.
Michael Gerrard, the managing director of the sewerage project for Thames Water, said Londoners have to contribute to their city's future.
Schott told the commission on Monday that AWH had a "sloppily drafted" agreement with Sydney Water to provide water and sewerage services for housing developments in Sydney's north-west.
Under another plan, $580 million will be allocated to building treatment plants and sewerage lines for the 16 cities that surround Guanabara Bay, where about two-thirds of the state's population lives.
Recently, the 2009 Melbourne Metropolitan sewerage strategy for Melbourne aims to provide sustainable sewerage services in the city to 2060.
This method has been tested in sewerage systems for the first time and shows great promise.
The strategy aims to decongest the existing centralised sewerage system for Melbourne through the adoption of decentralised and on-site wastewater systems.
The major sewerage system for disposal of sullage is through septic tanks and public conveniences.
