Irish Water has started work on a 500 million euro project to supply Dublin with water from the River Shannon.
It is seeking tenders for a Survey Specialist to examine the water quality at Lough Derg and the Parteen Basin, from where the water will be sourced.
When completed, around 350 million litres a day will come from the Shannon to serve Dublin drinking water needs for the next 70 years.
It's believed Irish Water will submit a planning application at the end of 2015.