VLAWMO staff collect samples from 12 water bodies: Amelia Lake, Birch Lake, Black Lake, Charley Lake, Deep Lake, Gem Lake, Gilfillan Lake, East Goose Lake, West Goose Lake, Tamarack Lake, West Vadnais Lake, and Wilkinson Lake. These lakes are all shallow with depths no greater than 9 feet. Samples are also collected at 6 locations along Lambert Creek as part of the Organization's mission to protect and improve the water-related environment. The data received from the monitoring is used by the Minnesota Pollution Control Agency (MPCA) to determine the health of the state's waters. Lambert Creek and 5 of the lakes have been listed on the Impaired Waters List and are now part of a Total Maximum Daily Load (TMDL) study. These water bodies no longer meet State water quality standards due to excess nutrients (phosphorus), or bacteria (E. coli).
VLAWMO works in conjunction with the St. Paul Regional Water Service (SPRWS) on water quality monitoring. The SPRWS monitors the direct surface water flow into East Vadnais Lake to assure high quality drinking water for over 400,000 consumers. The SPRWS monitors the main chain of lakes (Charley Lake, Pleasant Lake, Sucker Lake and Vadnais Lake) and portions of Lambert Creek.