Sepa NZ Limited is an industrial waste water treatment company specialising in oily water separation and dissolved air flotation (DAF).Sepa NZ Limited and its predecessor Sepa Waste Water Treatment (NZ) Ltd have supplied oil separators and DAF units to treat successfully treat waste water accross a range of industries for over 20 years.Sepa NZ Ltd is a wholly NZ owned and operated company based in Auckland, NZ.