Excessive chloride concentrations threaten the ecology and biogeochemistry of urban aquatic systems, with serious implications for biotic communities and ecosystem function. While road salt is a well known driver of chloride levels, other factors moderate the persistence and impact of chloride in surface waters but are much less well understood. This study aimed to discern and predict which urban surface waters are most affected by chloride during the summer, considering impacts of hydrology, land use, surface water type, and winter inputs across diverse surface waters in the Twin Cities Metropolitan Area (TCMA), Minnesota. Upwards of fifty springs, streams, ponds, and lakes in the TCMA were sampled over two years for chloride and biogeochemical tracers to infer water sources. Tracer and hydrologic connectivity metrics were used to examine how variation in water sources from surface runoff or groundwater affected relationships between land cover and chloride in common surface water types (streams, ponds, springs, and lakes). Land cover variables, including road density and percentage of a watershed developed, were used to understand connections between urbanization and surface water salinization. Preliminary results show relationships between percentage of watershed developed and road density with chloride concentrations, as well as a positive relationship between groundwater contributions to stream flow and chloride concentration. These results demonstrate the year-round presence of elevated chloride in some settings, with persistent chloride from winter road salt applications throughout the entire year. Further, preliminary results show a strong influence of seasonal precipitation on summer chloride as indicated by consistent decreases in chloride concentrations from 2023 (a very dry summer) to 2024 (a very wet summer). Novel in finding that climate variably influences surface water chloride based on seasonal precipitation, land use, and hydrology, this study suggests consideration of site-specific strategies for minimizing the impacts of chloride in urban surface waters facing rapid anthropogenic change.