Otago Vacuum Tank Services Ltd have been servicing Dunedin for over 20 years and now brings a fresh approach to the liquid waste Industry with experienced technicians who will find a solution to your problem. OVTS offers a wide range of Vacuum trucks from 4000-10,000lt capacity with a “No job is too big” attitude. Otago Vacuum Tank Services offers the following services: • Septic Tank cleaning • Septic Tank Inspections • Septic Tank Repairs • Grease Trap cleaning • Stormwater Sump Cleaning and Maintenance • Boat Bilge cleaning • Oil Interceptor cleaning