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Understanding the costs of investigating coliform and E. coli detections during routine drinking water quality monitoring

机译：了解在常规饮用水质量监测期间调查大肠杆菌和大肠杆菌检测的成本

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摘要

Bacteriological failure investigations are crucial in the provision of safe, clean drinking water as part of a process of quality assurance and continual improvement. However, the financial implications of investigating coliform and Escherichia coli failures during routine water quality monitoring are poorly understood in the industry. The investigations for 737 coliform and E. coli failures across five UK water companies were analysed in this paper. The principal components of investigation costs were staff hours worked, re-samples collected, transportation, and special investigatory activities related to the sample collection location. The average investigation costs ranged from £575 for a customer tap failure to £4,775 for a water treatment works finished water failure. These costs were compared to predictions for US utilities under the Revised Total Coliform Rule. Improved understanding of the financial and staffing implications of investigating bacteriological failures can be used to budget operational expenditures and justify increased funding for preventive strategies.
机译：细菌学衰竭调查对于提供安全，清洁的饮用水至关重要，这是质量保证和持续改进过程的一部分。但是，业界对水质常规监测期间对大肠菌群和大肠杆菌故障的调查所涉及的财务问题知之甚少。本文分析了五家英国自来水公司对737大肠菌和大肠杆菌的故障调查。调查成本的主要组成部分是工作时间，重新采样，运输以及与采样地点有关的特殊调查活动。平均调查成本从客户水龙头故障的575英镑到水处理厂完成的水故障的4,775英镑不等。将这些成本与修订后的《大肠菌群规则》中美国公用事业的预测进行了比较。更好地了解调查细菌学衰竭的财务和人员配置含义可用于预算运营支出，并为预防策略增加资金辩护。

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