Harbor Beach WWTP - Sand Beach Township, Michigan Wastewater Treatment Plant

Harbor Beach WWTP is a municipal wastewater treatment facility located in Sand Beach Township, Huron County, Michigan, along South Lakeshore Road. The plant serves a population of about 1,837 people, reflecting a small community on the eastern shore of Michigan's Thumb region. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). For small agglomerations like this, secondary treatment is the standard requirement to meet water quality standards. The plant's treated effluent ultimately reaches Lake Huron, one of the five Great Lakes, which provides drinking water and supports diverse aquatic life. The facility plays a key role in protecting the lake's water quality from nutrient pollution and pathogens, especially given the sensitive nature of the Great Lakes ecosystem.

The plant's discharge enters the Lake Huron watershed, a major freshwater resource that drains into the St. Clair River, Lake St. Clair, and the Detroit River before reaching Lake Erie. Lake Huron supports a variety of fish species and provides habitat for migratory birds. Protecting this water body from excess nutrients and contaminants is critical for maintaining its ecological health and recreational uses.