Legislative Assembly for the ACT: 2003 Week 9 Hansard (28 August) . . Page.. 3441 ..
In relation to the maintenance of sewerage and stormwater systems:
(1) Are sewers maintained on a regular basis or are they only checked at certain times
(2) How many sewerage spills were there between 1 July 2002 and 30 June 2003;
(3) How many sewers required emergency maintenance between 1 July 2002 and 30 June 2003;
(4) What is the economic service life of sewers in the ACT i.e. when would it be cheaper to replace them rather than maintain them;
(5) How many sewers in the ACT have reached the end of their useful life and in what areas are they located;
(6) What plans do you have to replace those sewers and in what timeframe do you plan to do this;
(7) How many sewers are within five years of being due to be replaced and in what areas are they located;
(8) What plans do you have to replace those sewers and in what timeframe do you plan to do this;
(9) What maintenance program do you have for the stormwater system in the ACT;
(10) What filtering mechanism exists in the stormwater system to stop harmful material getting into the river and lake networks;
(11) At what age does a stormwater drain reach the end of its economic life;
(12) How many stormwater drains in the ACT are approaching the end of their economic life and whereabouts are they located;
(13) What plans do you have to replace these drains and over what timeframe.
Mr Wood: The answer to the member's question is as follows:
(1) The larger sewer mains are cleaned and inspected under a long-term cyclical program. Where blockages are occurring frequently, smaller sewers are scheduled into annual inspection programs to determine the most appropriate long-term action or put onto programs for cleaning or root foaming. In 2002/2003 approximately 70 km of mains were cleaned or root foamed under these programs. The programs for cleaning or root foaming are ongoing.
(2) There were 3069 sewer blockages during the year. This figure is as reported to the Water Services Association of Australia for publication in their industry summary "WSAA Facts"and applies to blockages in mains, not internal blockages caused by problems in the house connection branch or internal house drain system. All spills of significance are reported immediately to Environment ACT. In the last 12 months 42 reports of this type were made.