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首页> 外文期刊>Current Environmental Engineering >Effect of Rainfall Events on the Microbial Quality of Recreational Water in the Swan and Canning Rivers in Western Australia
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Effect of Rainfall Events on the Microbial Quality of Recreational Water in the Swan and Canning Rivers in Western Australia

机译：降雨事件对西澳大利亚州天鹅河和坎宁河娱乐水微生物质量的影响

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摘要

Background: Rainfall events are known to be associated with the health of recreational water. Pathogens in recreational water may pose a risk to bathers and water users, including naturally occurring microorganisms as well as those that are present asa result of faecal pollution. This study aims to investigate whether rainfall events impact on the microbial quality of recreational water in Swan Canning estuary in West-em Australia (WA) and to identify and propose effective management interventions.Methods: Compliance of water quality in recreational waters is assessed according to microbial water quality assessment categories (MACs) based on the 95th percentile of enterococci counts with the me of Enterotester Template~(TM).Results: Results indicate that the number of enterococci in the water rises along with increasing volumes of rainfall. Enterococci levels between 201 to 500 MPN/lOOml are associated with rainfall ranging from 3-21mm and elevated enterococci levels over 700 MPN/lOOml are associated with rainfall ranging from 12-35mm.Conclusion: A causal relationship between enterococci levels in recreational waters and rainfall events exists. Enterococci levels increase following rainfall events of 5mm and over in the majority of sampling sites along the Swan and Canning Rivers during five consecutive bathing seasons. Although environmental and faecal pollutions also contribute to recreational water quality, summer rainfall data has indicated that recreational water bodies experience periods of increased enterococci levels as rainfall volumes increase.
机译：背景：降雨事件与休闲水的健康有关。休闲用水中的病原体可能对沐浴者和用水者构成威胁，包括自然产生的微生物以及因粪便污染而存在的微生物。这项研究旨在调查降雨事件是否对西澳大利亚西部天鹅坎宁河口休闲水的微生物质量产生影响，并确定并提出有效的管理干预措施。方法：根据以下方法评估休闲水的水质达标情况：结果：结果表明，水中的肠球菌数量随着降雨量的增加而增加，基于肠道球菌第95个百分位数的微生物水质评估类别（MACs）。肠道球菌水平在201至500 MPN / 100ml之间与3-21mm的降雨有关，而肠道球菌水平在700 MPN / 100ml以上与12-35mm的降雨有关。事件存在。在连续五个游泳季节，沿着天鹅河和坎宁河的大多数采样点，在5毫米及以上的降雨事件之后，肠球菌水平增加。尽管环境和粪便污染也影响了休闲水的质量，但夏季降雨数据表明，随着降雨量的增加，休闲水体的肠球菌水平也有所提高。

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