The effort of the HMDA to improve water quality at Hussainsagar would be affected by the GHMC’s lack of preparation ahead of the Ganesh festival this year. The irrigation department has handed GHMC the responsibility of organising the immersion of Ganesh idols at 31 city lakes but the corporation is yet to finalise the tenders. The civic body has now decided to divert a few idols meant for these lakes to the Hussainsagar this year. An official said that about 8,000 big idols would be i