The Drinking Water Contaminants of Emerging Concern (CEC) program identifies environmental contaminants for which current health-based standards currently do not exist or need to be updated, investigate the potential for human exposure to these chemicals, and develop guidance values for drinking water. Contaminants evaluated by CEC staff include contaminants that have been released or detected in Minnesota waters (surface water and groundwater) or that have the potential to migrate to or be detected in Minnesota waters.
The project goal is to conduct water chemistry monitoring at four subwatershed sites and one basin site in 2016, 2017, 2018 and 2019. Water chemistry monitoring will be conducted at a wide range of flow conditions with emphasis of collecting samples during periods of moderate and high flows after runoff events, as defined in the Watershed Pollutant Load Monitoring Network (WPLMN) Standard Operating Procedures and Guidance. The data collected will be submitted to the Minnesota Pollution Control Agency (MPCA) and used in the FLUX32 model for calculating pollutant loads.
This project will develop a Watershed Restoration and Protection Strategy (WRAPS) report as well as Total Maximum Daily Load (TMDL) studies where needed. The TMDLs will provide the quantitative pollutant load reduction estimates and a set of pollutant reduction and watershed management strategies to achieve water quality standards for the impairments within the watershed. Strategies for protecting the unimpaired waters within the watershed will also be included.
The International Water Institute (IWI) will monitor 42 sites (3 basin, 12 major watershed, and 27 subwatershed) in the Red River and Upper Mississippi River Basins intensively during 2016, 2017, 2018 and 2019. There will also be 5 sites in the Red River Basin where mercury samples will be collected in 2016 and 2017 and sent to Minnesota Department of Health for analysis. The IWI will collect water samples across the range of flow conditions targeting sample collection at times of moderate to high flow.