ENRTF ID: 088-B Project Title: Cheap Small Sensor Network for Water Pollutants Monitoring Category: B. Water Resources Summary: This project is to develop practical sensor networks based on sensors in Phase I, a very cheap and highly efficient approach for pollutants monitoring of lakes and rivers in Minnesota. Total Project Budget: $ 635,000 Proposed Project Time Period for the Funding Requested: June 30, 2023 (3 yrs) Name: Tianhong Cui Sponsoring Organization: U of MN Department: Address: 111 Church Street SE Minneapolis MN 55455 Telephone Number: (612) 626-1636 Email cuixx006@umn.edu Location: Statewide Alternate Text for Visual: Compared to current lab and on-site equipment for testing water pollutants, the proposed sensor network is 5 times more accurate, while it is 20 times cheaper.