Drinking water supplies

If drilling and service personnel require accommodation at the well site a camp will need to be constructed. For safety reasons the camp will be located at a distance from the drilling rig and consist of various types of portacabins. For the camp, waste pits will be required, access roads, parking space and drinking water supplies. 

The maximum allowed concentration of chloride in a municipal drinking water supply is 2.50 X 10 ppnr Ch. When the supply of water exceeds this limit, it often has a distinctive salty taste. What is this concentration in moles Ck/liter ... 

Atrazine and simazine arose principally as a result of their use in amenity situations but, since their ban for non-agriciiltiiral purposes, concentrations are generally declining. Fiowever, atrazine and simazine still have some agricultural uses (atrazine on maize and simazine on a wide range of crops), so the risk of pollution still exists when these pesticides are applied in either groundwater or surface water drinking water supply catchments. 

Do workers in the exelusion zone have ready aeeess to drinking water supplies, shaded rest areas, and/or air eonditioned or fan-eooled areas ... 

Are eool-down areas and drinking water supplies readily available to employees working in the exelusion zone ... 

Water analysis for drinking-water supplies is concerned mainly with pollution and bacteriological tests. For industrial supplies a mineral analysis is of more interest. Table 2.11 includes a typical selection and gives some indication of the wide range that can be found. 

Twenty-four million people rely on the Great Lakes for drinking water supply ... 

In developed countries heavy rain events not followed by floods have frequently been associated with outbreaks linked to drinking water supplies derived from... 

Halogenation is important for disinfecting drinking water supplies, generally nsing molecular chlorine. Most attention has been directed to the adverse production of haloforms and haloacetates from reactions of chlorine with natural substrates, although in water containing bromide/iodide, a nnmber of other reactions may occur. 

Cyanide contamination creates special public information problems, e.g. it is difficult to explain why cyanide is not included in the current drinking water standards but that aquatic organisms are affected at relatively low cyanide concentration. There is confusion on whether fresh water standards are based on free or complexed cyanides. Fortunately, the provision of a permanent drinking water supply to each affected household removed risk assessment as a major issue. 

P. J. Robinson, J. T. Walker, C. W. Keevil, and J. Cole, Reporter genes and fluorescent-probes for studying the colonisation of biofilms in a drinking-water supply line by enteric bacteria. FEMS Microbiol. 729 183 (1995). 

Protection of the Drinking Water Supply this is the most pressing concern especially in developing island nations like Tuvalu in the Pacific but even in the Netherlands where Protection Against Sea Water Encroachment in the Water Supply is harder to ensure than Prevention of the Flooding of Land near or below sea level. 

Downriver drinking water supply Dry lagoons leaching to river Hexahydro- 1.3.5- trinitro- 1.3.5- triazine (RDX)... 

Values of Cw for possible compounds of concern appear In Table V. All values are well In excess of 1, which Indicates that downstream drinking water supplies would not reach pollutant levels that might cause adverse human health effects. 

In view of the above, groundwater in the vicinity of the landfill should be used as a drinking water supply only if the PBB concentrations are vigorously monitored. Cattle grazing should be restricted to the extent necessary. 

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