Greenville, Iowa is a small town located in the northwestern part of the state. The area features a humid continental climate characterized by hot summers and cold winters. The region is situated near the Raccoon River watershed and features a mix of agricultural and forested land. As a result, the hydrology constituents in Greenville include nitrates, phosphates, and sediments. Outdoor recreation opportunities in the area include fishing, hunting, and hiking in nearby state parks such as Springbrook and Brushy Creek. Additionally, Greenville is home to the Raccoon River Valley Trail, a 89-mile multi-use trail popular for hiking, biking, and horseback riding.