28. To hold the Council responsible does not however exclude the possibility that Citywide may also be liable under Section 16(1) of the Water Act. Citywide may be liable if it can be said that it caused the flow of water and the damage since by the very nature of legal causation as explained in Medlin's case the finding that the Council "caused" the flow of water and the damage does not preclude a finding that it was also caused by Citywide. As between the Council and Citywide the responsibility for proactive maintenance and emergency service lay upon Citywide in accordance with the contract to which I have already made reference. I heard extensive evidence from Mr Dennis the contract co-ordinator with Bayside City Council and Mr Gordon one of the executives of Citywide involved in the administration of the contract. I also heard evidence from Ms Tania Ipavec who it will be recalled was an officer of Fisher Stewart Pty Ltd, providing a "shop front" service at the Council's premises. There was no unanimity amongst these witnesses as to precisely what time response standards Citywide had to meet for work other than routine programmed maintenance. Ms Ipavec said that she understood the works request which she filled out to have required the work to be carried out within 24 hours. She was not asked whether "24 hours" meant on the next business day or simply 24 hours from the date of the request. Mr Dennis was of opinion that the matter should have been responded to in two hours based upon the fact that there was a threat to property. Mr Gordon said that according to his understanding, since the matter was not designated an emergency call out, Citywide was acting properly in deferring action till the next business day, which was its initial decision, until after a further call was made following the flood. None of the witnesses suggested that the table of response times to be found in Clause 22 of the relevant part of the contract was to be regarded as applicable. Both Mr Dennis and Mr Gordon accepted to one degree or another that the parties had always treated those standards as impracticable. Whilst monthly contract meetings considered these issues on and off over a long period of time, a substitute set of time response standards was not "signed off" until March this year. As at January 1998 the situation seemed to be that the parties had abandoned the table found in the contract but had agreed upon no substitute. The matter was therefore at large and in the circumstances it seems to me Citywide's responsibility in any particular case depended upon the particular circumstances. The request for works which was despatched on the afternoon of the 23rd asserted that there was potential damage to property and that there had already been damage to property. Further, it stated that there was a threat of a compensation claim. Mrs Turner said that she did not threaten a compensation claim or say that her property was already damaged. Ms Ipavec has no independent memory of the matter. It may be that the information on the request for works completed by Ms Ipavec which did not come from Ms Turner, came from her interview with Mr Lang. Whether the threat of a compensation claim was made or not, if this compensation claim were only "dreamed up" by Ms Ipavec, she has proved strangely prophetic. Mr Gordon said that he had the request at about 3 p.m. on Friday the 23rd. The first consideration in his mind was that it had not been designated an "emergency call out" but he considered other factors namely: