North Lamar San Dist Wastewater Treatment Plant, Prowers County, Colorado

North Lamar San Dist is a wastewater treatment facility located in Prowers County, Colorado, United States. It serves a small population of 200 people, reflecting its role in a rural or small community setting. The plant is situated near US 50 and US 287 highways, providing access to the surrounding area. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The designed capacity is 113.56 volume units, and the current discharge volume matches this capacity, indicating full utilization. As a US facility, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body, likely a river or stream within the Arkansas River basin, which ultimately drains to the Mississippi River and the Gulf of Mexico. The plant's inland location, far from the coast, reduces direct marine impact. Its small scale and secondary treatment contribute to a low environmental risk profile, though proper operation is essential to protect local aquatic ecosystems.

The plant discharges into a local water body within the Arkansas River watershed, which flows through Colorado, Kansas, Oklahoma, and Arkansas before joining the Mississippi River and reaching the Gulf of Mexico. This inland basin supports diverse aquatic life and agricultural water use. The plant's small discharge volume and secondary treatment help minimize downstream nutrient and pollutant loads, though cumulative impacts from multiple sources in the basin require ongoing monitoring.