The Legislative Council is to reproach officials of the Highways Department for dereliction of duty in allowing junior staff to claim excessive overtime, sources said. It is understood that the rebuke will be delivered in a Legco Public Accounts Committee report to be released today. A report of the Audit Department released in March found that road workers were claiming an average of 360 hours' overtime each a year. The Highways Department said this was because their normal hours were fixed and they often had to repair roads at night or during holidays. A total of $18.7 million was paid for overtime carried out between January and July last year. Meanwhile, the Government said it would press to include more provisions when securing future water supplies from Guangdong. In a submission to the Public Accounts Committee, it said these would include ensuring a flexible supply according to demand and the amount of water stored in reservoirs. It should be stated explicitly that water quality must comply with standards established in 1988. Provision should also be included to settle disputes and lay down penalties and mitigation measures. Other new sources of water including underground water, sea water and recycled water would be explored. The study is expected to be completed by the middle of the year. An Audit Report published in October last year criticised the current water supply deal for not being flexible, which had led to an overflow of reservoirs. As a result, $1.72 billion was wasted. It also revealed that the quality of the water was poor.