Perak is prepared to supply 100 million litres of untreated water to the Klang Valley. Mentri Besar Tan Sri Ramli Ngah Talib said yesterday the water could be channelled through a special tunnel linking the Perak River to a river flowing across the Klang Valley. "The water diverted to the river could then be drawn by a treatment plant in Selangor and the Federal Territory to be processed," he said after opening the Sentuhan Perak exhibition here yesterday.