Ziggy
your question is short of detail, but I’ll try to give an answer.
You need to get a report , unfortunately paid by you , as to the cause and then the remedy for the pooling water. Whilst lots of us think we know the problem and solution, the only evidence that stands scrutiny is that of an expert in the field.
Present this to the committee and ask them to repair the common property as required in the act.
if after two months nothing has happened, initiate firstly mediation and then go to NCAT.
i think the section is 232 in the act . Essentially it’s the OC not carrying out its duties.
Whether ist falls under DBPA is the problem of the OC . They may need to engage a consultant.