Microbial Contamination of Drinking Water Supplied by Private Wells after Hurricane Harvey.
Microbial Contamination of Drinking Water Supplied by Private Wells after Hurricane Harvey.
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飓风哈维后私人水井供应的饮用水受到微生物污染。
DOI：
10.1021/acs.est.0c07869
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发表时间：
2021
影响因子：
11.4
通讯作者：
R. Beighley
中科院分区：
文献类型：
--
作者：
K. Pieper;C. N. Jones;W. Rhoads;McNamara Rome;D. Gholson;A. Katner;Diane E. Boellstorff;R. Beighley
飓风哈维于2017年8月25日以四级飓风强度登陆德克萨斯州墨西哥湾沿岸，并引发大范围洪灾。我们探讨了空间和时间分布的试井和污染率;污染和系统特性和恢复行为之间的关系;以及缓解策略的有效性。我们估计，超过50万井用户（130 000至260 000威尔斯）可能受到影响，但只有约15 000井用户（3800至7500威尔斯）根据洪水地图淹没系统。当地卫生部门和我们的团队在随后的10个月里对44个县的8822口威尔斯井进行了采样。总大肠菌群的发生率是1.5倍，大肠杆菌是2.8倍，与基线水平相比，哈维飓风后。当威尔斯井被淹没和/或居民认为他们的水不安全时，微生物污染的可能性更大（高1.7-2.5倍）。虽然城市县的威尔斯井较多，但E.农村县威尔斯井大肠杆菌感染率较高。消毒并不总是能消除污染，这突出表明人们对氯化程序的执行和效力感到关切。尽管在哈维飓风后进行了广泛的油井测试，但我们估计只有4.1%的潜在受影响的威尔斯井进行了测试，这突出了洪水事件后帮助油井用户所需的恢复援助的规模。
Hurricane Hurricane Harvey made landfall on the Texas Gulf Coast on August 25, 2017, as a Category 4 hurricane and caused widespread flooding. We explored spatial and temporal distributions of well testing and contamination rates; relationships between contamination and system characteristics and recovery behaviors; and efficacy of mitigation strategies. We estimated that over 500 000 well users (∼130 000 to 260 000 wells) may have been affected, but only around 15 000 well users (∼3800 to 7500 wells) had inundated systems based on inundation maps. Local health departments and our team sampled 8822 wells in 44 counties in the 10 months that followed. Total coliform occurrence was 1.5 times and Escherichia coli was 2.8 times higher after Hurricane Harvey compared to baseline levels. Microbial contamination was more likely (1.7-2.5 times higher) when wells were inundated and/or residents felt their water was unsafe. Although more wells in urban counties were affected, E. coli rates were higher in wells in rural counties. Disinfection did not always eliminate contamination, highlighting concerns about the implementation and efficacy of chlorination procedures. Despite this extensive well testing conducted after Hurricane Harvey, we estimate that only 4.1% of potentially affected wells were tested, underscoring the magnitude of recovery assistance needed to assist well users after flooding events.
影响因子：
10.9
作者：
Kapoor, Vikram;Gupta, Indrani;Duc Phan
通讯作者：
Duc Phan