Drinking water Technology, Eawag, developed a method by which hazard maps could be produced for geogenic toxic substances in groundwater. This provides an efficient way of determining which wells should be tested. Parameters for drinking water quality typically fall within three categories: Physical and chemical parameters include heavy metals, trace organic compounds, total suspended solids (TSS), and turbidity. Microbiological parameters include Coliform bacteria, "E. coli", and specific pathogenic species of bacteria (such as cholera-causing "Vibrio cholerae"), viruses, and protozoan parasites. Chemical parameters tend to pose more of a chronic health risk through buildup of heavy metals although some components like nitrates/nitrites and
Grain yield monitor harvester speed can be obtained by ground speed measurement from measuring the wheel speed of the harvester, radar mounted on the harvester, or by GPS. The head, as it is referred to is the device mounted on the front of the harvester by which the crop is gathered into the harvester. The width of the head is determined by the effective width of crop that can be harvested as the combine moves in the forward direction. formula_1 formula_2 The yield monitor is the device that records the data that determines the grain yield and the grain yield itself. Today's yield