The Leisure and Cultural Services Department closed six swimming pools in the Morse Park pool complex for cleaning after tests on water samples found levels of the bacterium E. Coli that exceeded the allowable limit. The pools will be reopened after tests confirm water quality is satisfactory. The department said it was studying the cause of the 'unsatisfactory' samples. Initial inspection showed the sterilisation and filtration systems were working properly. The children's fun pool and two toddlers' pools remained open.