A comprehensive risk assessment tool may have advantages for investigating complex water quality data and for a better understanding of the ecological status of the studied systems including aquatic ecosystems. In this paper, the impact of agricultural, industrial, and domestic sources on the quality of the Kor River in Fars Province, Iran are investigated. The study developed a procedure consists of pollution index (P_i), water quality index (WQI), and data grouping as a useful simple tool to assist water quality management. The pollution indicators used in the development of P_i and WQI are 15 physical, chemical, and biological variables in the river water. According to the world guideline standards, an appropriate weight is assigned to each indicator, scores of P_i are determined, a composite WQI is formulated, and a water quality grouping score is proposed. Pollution risk levels along the river are highlighted using the grouping score and dominant pollution sources are determined. Results revealed that pollution sources influence the water quality indicator content so that some sites are under the high influence of sewage disposal and industrial effluents and some others under the influence of agricultural runoff. Results also provide insight into the development of better pollution control strategies for the Kor River and other aquatic ecosystems affected by industrial, agricultural, and domestic pollution sources.

中文翻译：

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评估伊朗科尔河的水质隔室。

全面的风险评估工具可能有利于调查复杂的水质数据并更好地了解所研究系统（包括水生生态系统）的生态状况。本文研究了农业，工业和家庭资源对伊朗Fars省Kor河水质的影响。该研究开发了一种程序，该程序包括污染指数（P _i），水质指数（WQI）和数据分组，作为有助于水质管理的有用简单工具。P _i开发中使用的污染指标和WQI是河流水中的15个物理，化学和生物变量。根据世界指南标准，为每个指标分配适当的权重，即P _i确定水质，制定复合WQI，并提出水质分组评分。使用分组得分突出显示沿河的污染风险水平，并确定主要污染源。结果表明，污染源会影响水质指标的含量，因此某些地点受到污水处理和工业废水的高度影响，而另一些地点受到农业径流的影响。结果还为开发针对受工业，农业和家庭污染源影响的Kor河和其他水生生态系统的更好的污染控制策略提供了见识。