Overview
COLO STL is a secondary wastewater treatment plant serving Colo, Iowa. It treats municipal wastewater for a population of 771 with a designed capacity of 662.45 m³/day.
COLO STL is a municipal wastewater treatment plant located in Colo, Iowa, United States. The facility serves a small population of 771 residents in the community of Colo, which is part of Story County. The plant is situated along Lincoln Highway in a rural setting. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater facilities. With a designed capacity of 662.45 m³/day and a current discharge volume of 378.54 m³/day, the plant operates below its capacity. Under the National Pollutant Discharge Elimination System (NPDES), plants of this scale are typically permitted by the Iowa Department of Natural Resources. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant plays a key role in protecting water quality in the region, supporting downstream aquatic ecosystems and recreational uses.
Environmental context
The plant discharges into local streams that are part of the Mississippi River watershed. The receiving waters support diverse aquatic life and are used for recreation and agriculture. The region's water quality is managed under the Clean Water Act to protect downstream habitats.
Frequently asked questions
COLO STL is located on Lincoln Highway in Colo, Iowa, United States, in Story County.
The plant serves a population of 771 residents in the community of Colo.
The plant discharges treated effluent into local waterways that are part of the Mississippi River basin.
COLO STL provides secondary treatment, which is the standard required by the U.S. Clean Water Act for municipal wastewater.
As a U.S. plant, COLO STL operates under the Clean Water Act and is likely permitted through the National Pollutant Discharge Elimination System (NPDES) by the Iowa Department of Natural Resources.
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