FOUNTAINDALE WWTP - Secondary Treatment Plant in Middletown, Maryland

FOUNTAINDALE WWTP is a municipal wastewater treatment facility located in Middletown, Frederick County, Maryland, United States. The plant serves a population of about 3,000 residents, classifying it as a small to medium agglomeration under US regulatory frameworks. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater before discharge. With a designed capacity of 946.35 thousand gallons per day and an average discharge volume of 624.59 thousand gallons per day, the facility operates well within its capacity. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES), which sets permit limits for effluent quality to protect receiving waters. The treated effluent is discharged into local streams that are part of the Potomac River watershed, ultimately draining into the Chesapeake Bay. The Chesapeake Bay is a large estuary of ecological significance, supporting diverse aquatic life and important fisheries. The plant's secondary treatment helps reduce nutrient and pollutant loads, contributing to the bay's restoration efforts.

The plant discharges into tributaries of the Potomac River, which flows into the Chesapeake Bay, the largest estuary in the United States. The Chesapeake Bay watershed is ecologically sensitive, supporting diverse species including blue crabs, oysters, and migratory fish. Nutrient pollution from wastewater can contribute to algal blooms and hypoxia, making advanced treatment important for bay health.