The paper illustrates the reasons for the random observation errors in water environment,analyzes definitions,features and regulation of the random observation errors,and explores precautions in the random observation errors in water environment evaluation,so as to provide some reference for the treatment of water pollution.%阐述了水环境评价中产生随机观测误差的原因，分析了随机观测误差的定义、特点及其规律性，并对随机观测误差需注意的事项进行了研究探讨，为水污染的治理提供了一定的参考依据。
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