为了遵守瑞士苏黎世州规定的运行标准，哈德霍夫地下水厂的计算机控制是必要的。水位下降不能超过水井的许可水位，为了保持水质，Limmat河水井的补给必须与井口保护区内的水流和径流方向相平衡。哈德霍夫的计算机安装也有助于管理城市供水和实体工厂安全系统的能源成本。本文讨论了苏黎世利用过程计算机管理地下水的成功经验。 包括参考，数字。

Computer control of the Hardhof groundwater plant is necessary to adhere to operational criteria stipulated by the canton of Zurich, Switzerland. Drawdown cannot exceed the licensed levels of the wells, and to maintain water quality, recharge of the wells from the Limmat River must be balanced against streamflow and the direction of runoff within the wellhead protection zones. The computer installation at Hardhof also assists with managing energy costs for the city's water supply and security systems for the physical plants. This article discusses Zurich's successful experience with groundwater management by means of process computers. Includes reference, figures.