(1) Whether, with reference to the reply to question 539 on 9 June 2008, the Water Research Commission has completed its study on low phosphate detergents; if not, why not; if so, what are the results of this study; (2) whether her department intends banning phosphates in detergents; if not, what is the position in this regard; if so, (i) what are the relevant details and (ii) what steps does her department envisage taking in this regard?