Overview
DILLON WWTP serves approximately 4,134 residents in Dillon, Montana. The facility treats municipal wastewater and discharges into the local watershed, supporting downstream water quality in the Beaverhead River basin.
DILLON WWTP is a municipal wastewater treatment facility located on Lagoon Road in Dillon, Beaverhead County, Montana. Serving a population of around 4,134, the plant is part of the town's essential infrastructure for managing domestic wastewater. Dillon sits in a semi-arid region of southwestern Montana, where water resources are critical for agriculture and ecosystems. As a small agglomeration under the U.S. Clean Water Act, the plant is expected to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permitting program. Typical plants of this scale in Montana use lagoon systems or mechanical treatment to achieve regulatory compliance. The plant's treated effluent ultimately reaches the Beaverhead River, a tributary of the Jefferson River, which flows into the Missouri River system. This watershed supports diverse aquatic life and is important for irrigation and recreation. Proper treatment at DILLON WWTP helps protect downstream water quality in this ecologically sensitive region.
Environmental context
The plant discharges into the Beaverhead River watershed, which drains into the Jefferson River and then the Missouri River system. This basin supports coldwater fisheries, including trout species, and provides habitat for migratory birds. The semi-arid climate makes water quality management crucial for maintaining ecological health and agricultural uses downstream.
Frequently asked questions
DILLON WWTP is located on Lagoon Road in Dillon, Beaverhead County, Montana, United States.
The plant serves approximately 4,134 residents in the city of Dillon and surrounding areas.
The plant discharges treated effluent into the Beaverhead River watershed, which flows into the Jefferson River and ultimately the Missouri River system.
As a U.S. facility, DILLON WWTP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Montana Department of Environmental Quality.
Small wastewater treatment plants in Montana often use lagoon systems or mechanical treatment to achieve secondary treatment standards, as required by the Clean Water Act for municipal facilities.
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