Kriss Rebecca, Edwards Marc A
Civil and Environmental Engineering, Virginia Tech, 418 Durham Hall, Blacksburg, Virginia 24061, United States.
ACS ES T Water. 2024 Aug 12;4(9):4175-4183. doi: 10.1021/acsestwater.4c00447. eCollection 2024 Sep 13.
Residents and their pets may experience aesthetic or health concerns resulting from elevated copper in their drinking water. The United States Environmental Protection Agency Lead and Copper Rule focuses on addressing systemwide corrosion issues, but gaps in the rule leave some municipal water consumers and residents with private well water vulnerable to high cuprosolvency. We developed guidance to aid residents in understanding, detecting, and addressing cuprosolvency issues in their drinking water. Three types of at-home test kits for copper and one for pH were determined to be accurate enough ( > 0.9 (lab, based on average values from = 5 replicates each) and >0.7 (field)) to detect concerns related to high cuprosolvency and inform selection of intervention options. Case study results indicate that, although water treatments such as increasing pH on-site may be effective, long-term treatment (>36 weeks or permanently) may be needed to maintain reductions in cuprosolvency. A decision tree is provided to help residents and citizen scientists navigate these concerns for both public water systems and private wells.
居民及其宠物可能会因饮用水中铜含量升高而面临美观或健康方面的问题。美国环境保护局的铅与铜规定侧重于解决全系统的腐蚀问题，但该规定存在的漏洞使一些市政供水用户和使用私人井水的居民容易受到高铜溶解性的影响。我们制定了指南，以帮助居民了解、检测和解决其饮用水中的铜溶解性问题。已确定三种家用铜测试套件和一种pH测试套件的准确性足以（实验室中，基于每组5次重复的平均值，>0.9；现场，>0.7）检测与高铜溶解性相关的问题，并为干预选项的选择提供依据。案例研究结果表明，尽管诸如现场提高pH值等水处理方法可能有效，但可能需要长期处理（>36周或永久性处理）以维持铜溶解性的降低。提供了一个决策树，以帮助居民和公民科学家应对公共供水系统和私人井的这些问题。
