Households have until midnight tonight to register their details with Irish Water or they may face a default charge of 260 euro.
Irish Water says over 1 million people have returned their application packs - leaving over 835-thousand yet to register.
The utility is urging those who are yet to submit their details to do so so they not only receive the correct bill - but are also eligible to apply for the 100 euro Water Conservation Grant - introduced by the Government in November in light of rising public backlash against the charge.
Any unregistered customers are being warned that they will receive a default bill at the capped charge of 65 euro per quarter - or 260 per year - with the first bills being sent out from April.
Speaking to Highland Radio News, Cllr Gary Doherty of the right2water campaign claimed Irish Water are putting a spin on their figures. He believes there will be a massive campaign of non-payment ..........