Quarterly sample results for per- and polyfluoroalkyl substances (PFAS) for locations in Campbell, Wisconsin, 2021-24 (ver. 2.0, March 2025)

This data release provides the concentration results for per- and polyfluoroalkyl substances (PFAS) collected on French Island, in the town of Campbell, Wisconsin, sampled quarterly beginning in 2021. These samples were collected from groundwater wells (potable and non-potable taps) by the U.S. Geological Survey (USGS) Upper Midwest Environmental Science Center (UMESC). Three U.S. Environmental Protection Agency (EPA) certified laboratories were contracted to analyze samples for this study. Samples from the first sampling in 2021, were analyzed by SGS Axys Analytical Services Laboratory (SGS Axys) in British Columbia, Canada. Samples from the second sampling in 2021 were analyzed at the Wisconsin State Laboratory of Hygiene (WSLH), University of Wisconsin-Madison, Madison, Wisconsin. Subsequent samples were analyzed at Northern Lake Service, Inc. (NLS), Crandon, Wisconsin. All samples were analyzed using liquid chromatography/tandem mass spectrometry (LC-MS/MS). UMESC used three analytical labs because of the dynamic nature of sampling needs and design that shifted from an initial determination of water-supply contamination to a quarterly sampling scheme. The initial laboratory (SGS Axys) was selected because of an existing contract for PFAS tissue analysis for research that allowed for rapid submission and results. The second laboratory (WSLH) was selected to meet Wisconsin PFAS monitoring criteria and improve sample delivery within the U.S. The third laboratory (NLS) was selected using the USGS acquisitions contract process to find a certified laboratory to accomplish the long-term monitoring sampling plan. All three laboratories were selected from the EPA list of PFAS certified laboratories. This version 2.0 data release updates the results table with more quarterly results for samples collected March 28, 2023-March 19, 2024. The full dataset lists quarterly sampling results collected between February 4, 2021-March 19, 2024. Revision history First release: December 2023 Revision 2.0: March 2025 Table titles including 'v2' are the version 2.0 files.

本数据集发布提供了威斯康星州坎贝尔镇法国岛采集的全氟和多氟烷基物质（per- and polyfluoroalkyl substances, PFAS）的浓度检测结果，采样工作自2021年起按季度开展。这些样本由美国地质调查局（U.S. Geological Survey, USGS）中西部环境科学中心（Upper Midwest Environmental Science Center, UMESC）从地下水井（饮用水及非饮用水龙头）采集。本研究委托三家经美国环境保护署（U.S. Environmental Protection Agency, EPA）认证的实验室完成样本分析工作：2021年首次采样的样本由位于加拿大不列颠哥伦比亚省的SGS Axys分析服务实验室（SGS Axys）检测；2021年第二次采样的样本由威斯康星大学麦迪逊分校威斯康星州卫生实验室（Wisconsin State Laboratory of Hygiene, WSLH）检测；后续采样的样本则由位于威斯康星州克朗登的北湖服务公司（Northern Lake Service, Inc., NLS）检测。所有样本均采用液相色谱-串联质谱法（liquid chromatography/tandem mass spectrometry, LC-MS/MS）进行分析。UMESC选用三家分析实验室，源于采样需求与方案具备动态调整特性：项目最初仅针对供水污染开展初步排查，后续调整为季度采样计划。首家实验室SGS Axys因已有针对PFAS组织分析的研究合同，可实现快速送检与结果反馈而被选中；第二家实验室WSLH契合威斯康星州PFAS监测标准，且能优化美国境内的样本递送流程；第三家实验室NLS通过USGS采购合同流程遴选而来，旨在获取具备认证资质的实验室以落实长期监测采样计划。三家实验室均选自EPA认证的PFAS检测实验室名录。本2.0版数据集发布补充了2023年3月28日至2024年3月19日采集样本的更多季度检测结果，完整数据集涵盖2021年2月4日至2024年3月19日期间的全部季度采样成果。修订记录：首次发布于2023年12月；2.0版修订发布于2025年3月；文件名及表格标题中包含‘v2’字样的即为2.0版文件。