ZDS. Co. is a private Iranian company that specializes in coastal and freshwaters consulting, limnological, pollution, and fisheries surveys, environmental impact assessment and monitoring (Rivers, Streams, Raceways, Reservoirs, Lakes, Ponds, Estuary, Lagoon, Marshes, Mangrove Forests).

The company also offers the following subjects: Site selection, design and management of aquaculture farms, natural purification and monitoring of different effluents, and design and management of biofilters.