Far North District Council is asking all households connected to council water and sewerage systems to conserve water and avoid flushing toilets during the power outage.
Transpower has advised this will be a prolonged power outage, so the Council is advising residents to prepare accordingly.
Town water and sewerage systems rely on mains power and residents are being asked to reduce loads on these systems, particularly in Kerikeri.
All Council offices and libraries are closed today.
Meanwhile, due to a widespread power outage in Northland, a number of Vodafone cell sites are currently without power.