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
Crop Over fireworks. Crop Over Crop Over (formerly called "Harvest Home") is a traditional harvest festival which began in Barbados, having had its early beginnings on the sugar cane plantations during slavery. The crop over tradition began in 1687, and featured singing, dancing and accompaniment by bottles filled with water, "shak-shak", banjo, triangle, fiddle, guitar, and bones. Other traditions included climbing a greased pole, feasting and drinking competitions. Originally a celebration signaling the end of the yearly sugar cane harvest, it has since evolved into Barbados' biggest national festival similar to Carnival in Brazil and Trinidad. With the harsh effects of World