1999年6月，英国政府修订了《供水（水质）条例》，规定英国水域中存在隐孢子虫卵囊。新规定要求供水商对其所有处理厂进行风险评估，并确定各厂供水中是否存在隐孢子虫卵囊污染的重大风险。供水商必须将调查结果通知国务卿。那些被发现存在隐孢子虫卵囊污染风险的处理厂必须使用环境运输部和地区批准的浓缩方法Filta Max系统进行持续监测。 结合监测程序，对浊度等参数进行监测。浊度的突然变化将导致Filta Max泡沫过滤器的立即处理。在正常操作条件下，Filta Max泡沫过滤器每天都要进行处理。每10升最终水的隐孢子虫卵囊数不得超过一个。任何超过此限值的水将被起诉。包括6个参考文献、图表。

In June 1999, the United Kingdom government amended the Water Supply (Water Quality) regulations regarding the presence of Cryptosporidium oocysts in United Kingdom waters. The new regulations require the water supplier to carry out risk assessments on all its treatment works and establish whether a significant risk of Cryptosporidium oocysts contamination in the water supplied from each works exists. The water supplier is required to notify the Secretary of State of its findings. Those treatment works found to be at risk from Cryptosporidium oocysts contamination must be continuously monitored using the Department of Environment, Transport and the Regions approved concentration method, the Filta Max system. In conjunction with the monitoring program, parameters such as turbidity are monitored. Sudden changes in turbidity are to result in the immediate processing of the Filta Max foam filter. Under normal operating conditions the Filta Max foam filters are to be processed on a daily basis. A limit of less than one Cryptosporidium oocyst per 10L of final water has been implemented. Any waters found to exceed this limit will result in the prosecution of the water supplier. Includes 6 references, figures.