Rainwater collection is a common source of household water in developed and developing communities where treated on-site water is not available. Although rainwater catchment has been practiced for generations in rural Alaska communities, there are little data available on the quality and quantity of rainwater resources. Forty-eight rainwater samples were collected from nine communities in Alaska over 2 years. Samples were tested for physical water quality parameters, metals, and bacteria. Characteristics of household catchments were recorded. Rainwater quantity in two communities was evaluated. Overall, high-quality water was observed in rain catchments, with average total organic carbon (TOC) and turbidity being lower than or equal to those values in other published rainwater studies. pH was consistently low. Over 80% of samples were below the United States limits for metals and met international microbiological water quality standards. However, variation was observed between households, communities, indoor/outdoor bacteria samples, covered/uncovered storage containers, and over time. The quantity of rainwater available for catchment could supply 17-40% of annual household water and is projected to increase in future decades according to Alaska climate models. Best practices are recommended for rural Alaska communities to maintain the naturally high quality of rainwater and take advantage of large quantities of rainwater available on-site.

中文翻译：

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阿拉斯加农村的雨水集水区有潜力生产高质量的水和大量的家用水。

雨水收集是发达和发展中社区的生活用水的普遍来源，在这些社区中，没有经过处理的现场水。尽管阿拉斯加农村社区几代人都实行了雨水收集，但是关于雨水资源的质量和数量的数据很少。在2年中，从阿拉斯加的9个社区收集了48个雨水样本。测试样品的物理水质参数，金属和细菌。记录住户流域的特征。评价了两个社区的雨水量。总体而言，在集水区观察到高质量的水，平均总有机碳（TOC）和浊度低于或等于其他已发表的雨水研究中的值。pH值一直很低。超过80％的样品低于美国的金属限量并符合国际微生物水质标准。但是，在家庭，社区，室内/室外细菌样本，有盖/无盖的存储容器之间以及随时间变化之间观察到差异。根据阿拉斯加的气候模型，可用于集水区的雨水量可提供每年家庭生活用水的17-40％，并且预计在未来几十年中会增加。建议为阿拉斯加农村社区提供最佳做法，以保持天然优质的雨水并利用现场大量可用的雨水。有盖/无盖的存储容器，并且随着时间的流逝。根据阿拉斯加的气候模型，可用于集水区的雨水量可提供每年家庭生活用水的17-40％，并且预计在未来几十年中会增加。建议为阿拉斯加农村社区提供最佳做法，以保持天然优质的雨水并利用现场大量可用的雨水。有盖/无盖的存储容器，并且随着时间的流逝。根据阿拉斯加的气候模型，可用于集水区的雨水量可提供每年家庭生活用水的17-40％，并且预计在未来几十年中会增加。建议为阿拉斯加农村社区提供最佳做法，以保持天然优质的雨水并利用现场大量可用的雨水。