A) The regular maintenance of DCH sewerage Assets based upon 2 visits / year (May and November), desludging of treatment plants ranging from 1 to 4 times / year and emptying of septic tanks to mostly 2 times / year.

B) To ensure the systems are maintained on a 24/7 basis in the best possible condition, a further aim being to reduce breakdowns to a minimum through preventative maintenance wherever possible.