Hoogheemraadschap De Stichtse Rijnlanden (De Stichtse Rijnlanden Water Board, Netherlands)

The Hoogheemraadschap De Stichtse Rijnlanden is a water authority in the Netherlands that is responsible for flood control, water quantity, water quality, and treatment of urban wastewater. Operational tasks include the management of pumping stations, wastewater treatment plants, maintenance of waterways, and flood defense structures. The area it serves comprises most of the province of Utrecht and a small part of the province of Zuid-Holland.