Heath Iron Enhanced Sand Filter

The Comfort Lake-Forest Lake Watershed District will construct an iron enhanced sand filter project on District-owned land in order to achieve an 86 lb/yr phosphorus reduction which comprises 84% of the goal load reduction for the “Heath Avenue inlet” subwatershed draining to Little Comfort Lake. The District has purchased the underlying property to construct, own, and maintain the project in perpetuity. This project is key to achieving the Total Maximum Daily Load reductions for two nutrient-impaired waterbodies: Little Comfort Lake and Comfort Lake. Given the high amount of dissolved phosphorus in this tributary, iron enhanced sand filters are the most cost-effective practice to improve water quality.