South Englewood Sanitation District No. 1 is a Colorado quasi-municipal sanitary sewer district governed by Colorado Revised Statute Title 32. Its five-member Board of Directors is elected by residents and landowners in the District. South Englewood Sanitation District No. 1 serves over 4,500 homes and businesses in Centennial, Littleton, Greenwood Village and unincorporated Arapahoe County, Colorado. Originally formed in 1951, the District encompasses over three square miles. Generally, the District is located between South Franklin St. and South Sante Fe Drive; and between West Quincy Ave. and E. Arapahoe Road.