Water quality from tile drains and surface runoff was measured from half acre plots on Toledo silty clay soil near Sandusky, Ohio, in 1972. Crop was oats in early part of the growing season followed by plowing and seeding to alfalfa in September. Growing season sediment losses from the tile drains were 3,714 lbs per acre in 1972 compared to an average of 1,071 lbs per acre for 1969-71. The corresponding losses from surface drains were 6,854 and 1,287 lbs per acre. All pesticide losses were insignificant, but none were applied in 1972. Annual losses of eight heavy metals in 1972 were estimated to be less than 10 lbs per acre, except for iron (34-59) and lead (11-15 lbs per acre).