Wildfire caused widespread drinking water distribution network contamination
Wildfire caused widespread drinking water distribution network contamination
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DOI：
10.1002/aws2.1183
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发表时间：
2020-07-01
期刊：
影响因子：
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通讯作者：
Whelton, Andrew J.
中科院分区：
文献类型：
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作者：
Proctor, Caitlin R.;Lee, Juneseok;Whelton, Andrew J.
塔布斯火灾（2017年）和营地火灾（2018年）是第一次已知的野火，在火灾后的供水网络中发现了广泛的饮用水化学污染，而不是水源。在这两次灾难中，饮用水超过了州和联邦政府规定的几种挥发性有机化合物（VOC）污染物的暴露限值（例如，苯浓度为40，000 μ g/L [Tubbs]和> 2，217 μ g/L [Camp]）。这项工作概述了影响野火引起的饮用水质量威胁的因素，根据这两个火灾的调查结果，并探讨相关的科学和政策问题。例如，网络中的某些塑料可以通过原位塑料热解作为主要的VOC来源。配水网络的减压可能会输送受污染的水，随后污染未受损的基础设施。由于荒地-城市交界处的野火可能会更频繁地发生，因此需要更多的科学证据来指导机构的反应，以更好地保护公众健康。
The Tubbs Fire (2017) and Camp Fire (2018) are the first known wildfires where widespread drinking water chemical contamination was discovered in the water distribution network and not in the source water after the fire. In both disasters, drinking water exceeded state and federal government-defined exposure limits for several volatile organic compound (VOC) contaminants (e.g., benzene at 40,000 mu g/L [Tubbs] and >2,217 mu g/L [Camp]). This work outlines factors that influence wildfire-induced drinking water quality threats based on the findings from these two fires and explores related scientific and policy issues. For example, certain plastics in the network may serve as a primary VOC source through in situ plastic pyrolysis. Depressurization of the distribution network likely transported contaminated water that subsequently contaminated undamaged infrastructure. As wildfires at the wildland-urban interface are likely to occur more frequently, greater scientific evidence is needed to guide agency responses that will better protect public health.