AUS-ROV Underwater Inspections not only inspect fire water tanks and drinking water reservoirs but also provide maintenance services such as dive cleaning and tank refurbishment. AS 1851-2012 Routine Service of Fire Protection Systems and Equipment specifies that Fire Water Tanks must be cleaned 12 months after commissioning, when the tank base is covered in sediment to a level determined by a suitably qualified tank technician to require cleaning or at a maximum interval of every ten years. It pays to shop around when looking for tank or reservoir cleaning services. Always make sure the people you engage are ADAS Australian Diver Accreditation Scheme approved.