We will talk about them in this article. Lead is one of the most dangerous elements found in drinking water, for young people and infants in particular. It is also found in drinking water. The present recommended limit for iron in water, 0.3 mg/l (ppm), is based on taste and appearance rather than on any detrimental health effect. D. 5. Private water supplies are not subject to the rules, but the guidelines can be used to evaluate water quality. Over the last five years monitoring of water quality has improved. Iron makes up five percent of the earth’s crust and in dissolved form occurs in most ground water. Some quality parameters are set for drinking water which must be met as per the International Standards for drinking water. The best pH for drinking water sits at a 7 right in the middle. The International Standards for drinking water which must be followed are: The following table contains the Drinking Water Standards issued by the World Health Organization (WHO). the permissible limits of various metals in drinking water are as followsIron = 0.3 ppm ( parts per million )Copper = 1 ppmCadmium = 0.005 ppmManganese = 0.05 ppmThus answer should be C. Bacteria, viruses, and protozoa are contaminants of drinking water which can quickly cause widespread and serious diseases. SMCL’s are used when the taste, odor, or appearance of water may be adversely affected. The only time you see this is when an unscrupulous company is using a water softener as an iron filter. It is dissolved from the rocks and It is also found in drinking water. When given access to drinking water, lactating dairy cows can handle iron (Fe) concentrations of up to 4 parts per million (ppm) without decreasing the amount of water they consume, according to results of a recent study entitled, “Preference and drinking behavior of lactating dairy cows offered water with different concentrations, valences and sources of iron.” Contamination can occur from natural deposits in the water supply, but is most likely the result of leaching of pipes inside a house or flat building. Answer. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. iron is present in our water, it is usually found at concentrations less than 10 milligrams per liter (mg/l) or parts per million (ppm); however, levels high enough to cause problems are often found. Concentrations of iron in drinking-water are normally less than 0.3 mg/litre but may be higher in countries where various iron salts are used as coagulating agents in water-treatment plants and where cast iron, steel, and galvanized iron pipes are used for water distribution. 0 0 5. Your IP: 211.14.175.49 E. 0. The maximum allowable concentration of Pb 2+ ions in drinking water is 0.05 ppm (that is, 0.05 g of Pb 2+ in 1 million g of water). Required fields are marked *. The current recommended levels of iron in well water varies slightly by state, but they range between.2 and 1 … It is an essential element for humans, and it is used in a variety of industrial processes. 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