Ledyard Highlands WPCF - Advanced Wastewater Treatment in Ledyard, Connecticut

Ledyard Highlands Water Pollution Control Facility (WPCF) is a municipal wastewater treatment plant located in Ledyard, Connecticut, in the southeastern part of the state. The plant serves a small population of approximately 1,500 residents, reflecting its role in a rural community. The facility provides advanced treatment, which goes beyond the secondary treatment standard required by the US Clean Water Act. With a designed capacity of 984.20 million gallons per year and an actual discharge volume of 541.31 million gallons per year, the plant operates well within its capacity. As a US facility, it is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The plant is located within 10 kilometers of the coast, indicating its discharge likely reaches Long Island Sound or a tributary thereof. This coastal proximity means the plant's advanced treatment helps protect sensitive marine ecosystems from nutrient pollution and other contaminants. The facility plays a key role in safeguarding local water bodies and the broader Atlantic coastal environment.

The plant discharges into a watershed that drains to Long Island Sound, an ecologically significant estuary that supports diverse aquatic life including fish, shellfish, and migratory birds. The advanced treatment provided by Ledyard Highlands WPCF helps reduce nutrient loads that could otherwise contribute to eutrophication and hypoxia in the Sound. This coastal environment is vital for regional biodiversity and commercial fisheries.