TY - RPRT TI - Effects of residential wastewater treatment systems on ground-water quality in west-central Jefferson County, Colorado AU - Dennis C. Hall AU - D. E. Hillier AU - Edward Nickum AU - W.G. Dorrance PY - 1981 DO - 10.3133/ofr8173 UR - https://pubs.usgs.gov/publication/ofr8173 ID - ofr8173 ER -