未来几年，林堡的饮用水需求预计将略有上升。N.V.Waterleiding Maatschapij-Limburg（WML）计划通过使用地表水制备饮用水来提供可靠、稳定的饮用水供应，以满足这一需求。这是一种尚未在Limburg试验过的方法，WML将能够按照国家和省级当局的要求，从现在到2000年将其抽取的地下水减少30%。本文描述了为实现这一目标而创建的名为“切换”的项目。介绍了WML最大的地表水项目Heel的水处理设施及其与以下方面的关系:环境影响；生态与自然；娱乐还有建筑。给出了项目组织和时间表的描述。

The demand for drinking water is expected to rise slightly in Limburg over the next few years. N.V. Waterleiding Maatschappij Limburg (WML) plans to meet that demand by offering a reliable and constant supply of drinking water by using surface water to prepare drinking water, a method as yet untried in Limburg, WML will be able to reduce the groundwater it pumps from now until the year 2000 by 30% as required by both the national and provincial authorities. This paper describes the project created to acheive this goal, called "Switch". The water treatment facility in Heel, WML's biggest surface water project, is described and how it relates to such aspects as: environmental impacts; ecology and nature; recreation; and, architecture. A description of project organization and the timetable are given.