Siva Sekaran ByExpress News ServiceCHENNAI: Rainwater is the best one to immerse the idol of Sri Aththi Varadhar in the tank attached to Sri Varadaraja Perumal Temple in Kancheepuram, the Madras High Court has opined. Justice P D Audikesavalu, who made the opinion, also hoped that once the idol is placed in the 'Anantha Saras', copious rain would follow. According to petitioner, owing to climate change and various other anthropocentric reasons, the temple tanks in various other places had become unusable. The counsel for Pollution Control Board told the judge thatthe testing of the water to be filled in the tank is under progress. A representative from Anna University submitted that Cauvery water can be used for filling the tank, after cleansing it..