Winter Precipitation and PFAS
Snow accumulation captures atmospheric PFAS through wet and dry deposition, creating a seasonal PFAS reservoir. Spring snowmelt delivers PFAS pulses to surface water bodies and groundwater recharge zones, creating seasonal contamination dynamics relevant for source water monitoring.
PFAS in Snowpack and Ice
Studies of snowpack in mountainous and arctic regions show PFAS accumulation proportional to precipitation amount and proximity to emission sources. Global mountain snowpacks serve as long-term PFAS archives reflecting decades of atmospheric deposition history.
Snowmelt Contribution to Source Water
Water utilities drawing from snowmelt-fed reservoirs may experience seasonal PFAS concentration spikes during spring runoff. Source water monitoring programs should include PFAS-specific sampling during snowmelt periods to characterize seasonal variability in treatment requirements.
Road Salt and PFAS Co-Contamination
Some road deicers and anti-icing agents have historically contained PFAS as performance-enhancing additives. Stormwater runoff from de-iced roads can co-transport PFAS and road salt to surface and groundwater, creating complex co-contamination challenges for winter-climate treatment plant operators