UWGB Collaborates | Researchers “pleasantly surprised” by Door County’s groundwater quality | Door Co. Daily News
The Door County Board received a deeper understanding of the water you use every day during their regularly scheduled meeting on Tuesday. Sheryl Stephenson from GZA GeoEnvironmental provided information about its most recent testing of wells in Door County as they looked for sources of emergent contaminants like arsenic, nitrates, bacteria, and PFAS. Collaborating with UW-Green Bay, the company sampled 103 wells throughout the peninsula in the fall of 2023 and again the following spring in 2024. The company also performed more localized testing last fall. Stephenson went through the results, first looking at the countywide data before turning her focus to smaller areas that had previously shown elevated levels of PFAS and microplastic contamination above the standards set by the Environmental Protection Agency. After digging deeper into the numbers, Stephenson says they remain pleasantly surprised by the groundwater quality, especially since the heavy spring rains compared to the dry fall could have heavily influenced the data collected.