THOUSANDS of septic tank owners will not be eligible to claim a grant for repair works after failing to register their system on time.
The latest figures show that 350,000 people had registered by today's deadline. The 147,000 who failed to sign up to a new inspection regime will not be allowed to seek financial help to upgrade their systems.
The Department of the Environment said that almost 12,000 households registered their tank online over the course of yesterday, with more expected to arrive by post.
Households have been told that failure to register is an offence with fines of up to €5,000.
The inspection is to ensure that tanks are not leaking effluent into groundwater.
Households must register their system at www.protectourwater.ie, by post using forms available from libraries and citizen information centres or in local authorities.