GRAFTON WWTP - Secondary Treatment Plant in Worth County, Iowa

GRAFTON WWTP is a municipal wastewater treatment facility located in Worth County, Iowa, United States. The plant serves a small population of 282 residents, reflecting its role in a rural community. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids from wastewater. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. Its designed capacity is 113.56 units, matching the current discharge volume, indicating full utilization. The facility is regulated by the Iowa Department of Natural Resources under the National Pollutant Discharge Elimination System (NPDES) permitting program. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant's location in northern Iowa places it within the Upper Mississippi River watershed, which supports diverse aquatic life and provides drinking water for downstream communities. Proper treatment helps protect water quality in this agriculturally intensive region.

The plant discharges into local streams that flow into the Upper Mississippi River, a major waterway supporting diverse fish and wildlife. The watershed is predominantly agricultural, with nutrient runoff being a key concern. Effective secondary treatment reduces organic pollutants and helps maintain the ecological health of receiving waters.