It's been confirmed that Donegal has the lowest level of septic tank registration in the state.
Latest figures show that up to last Wednesday, 26% of Donegal tank owners has paid reguistration fees, compared with 81% in Kerry.
The Local Government Management Agency, almost 259,000 properties had been registered up to last Wednesday, with a further 20,000 forms awaiting processing.
Last year’s census returns showed there are 497,281 septic tanks and other on-site waste-water treatment systems in the State.
Including the payments awaiting processing, this represents a national compliance rate of 56%.