Sdružení oboru vodovodů a kanalizací ČR, z.s. (SOVAK ČR) (Water Supply and Sewerage Association of the Czech Republic) is a voluntary, non-governmental, non-profit, interest association in the sphere of public water supplies and sewer services. It is an association of entities involved in the water supply and wastewater disposal and treatment via public water supply and sewer systems, while focusing on the ownership and development (or construction) thereof.