Norwegian Water BA (In Norwegian: Norsk Vann BA) is a national association of water and wastewater works. In Norway these works are mainly owned and operated by the municipalities, some are inter-municipal companies. The ambition is to organize cooperation between the Water and Wastewater Works in technical, economical and administrative matters and attend the joint interests of the works. Norwegian Water BA also has affiliated organisations like suppliers to the water and wastewater industry, consultants, educational and research institutions.