United States Water Quality Monitoring Data (2020–2025): Trace Metals and Physicochemical Parameters

This dataset contains aggregated water quality monitoring data from 47 states across the United States, covering the period from January 1, 2020, to October 20, 2025. The dataset includes 66,772 records collected from 13,195 unique monitoring locations. It focuses on key physicochemical parameters and trace metals, making it suitable for environmental analysis, hydrological studies, and water quality assessments. Measured Parameters: Trace Metals: Arsenic (As), Iron (Fe), Manganese (Mn) Physicochemical: pH, Temperature, Dissolved Oxygen (DO), Conductivity Spatial Coverage: Region: United States (47 States + DC) Coordinates: Includes Latitude and Longitude for each monitoring site. Data Structure: The data is provided in CSV format with columns for State, Monitoring Location Identifier, Activity Start Date, Geographic Coordinates, and measurement values for the listed parameters.