TY - JOUR AU - Oertli, J. J. AU - Bradford, G. R. TI - Contribution to water pollution from agricultural and urban sources in the Coachella Valley JF - California Agriculture JO - Calif Agr Y1 - 1973/07/01 VL - 27 IS - 7 SP - 4 EP - 6 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v027n07p4 AB - The increased awareness of environmental qualities has made it desirable to obtain quantitative data on the contributions of agricultural and urban sources to water pollution. For this reason an investigation was initiated in the Coachella Valley on (1) the chemical composition of drainage water from cropped fields under various agricultural managements and (2) the effluents from the Indio sewage treatment plant.