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• <br />Water Quality: <br />Lino Lakes provides drinking water to residents from five wells that range in depth <br />from 258 feet to 338 feet. Based on a review of the Minnesota Department of Health <br />regulations and well water testing, the City's water supply meets primary regulations. <br />Primary regulations set a maximum allowable amount of contaminants present in a <br />water sample that represent a hazard to resident health. Secondary contaminates do not <br />have a maximum allowable amount and are non - health related, but the non - enforceable <br />Safe Drinking Water Act sets guidelines for contaminants that affect the aesthetic <br />quality of drinking water. Secondary contaminants in Lino Lakes that adversely affect <br />the drinking water aesthetics and generate customer complaints are iron and <br />manganese. <br />Lino Lakes Well Water Iron and Manganese Data <br />• <br />Well <br />No. 1 <br />Well <br />No. 2 <br />Well <br />No. 3 <br />Well <br />No. 4 <br />Well <br />No. 5 <br />Safe Water <br />Drinking <br />Act <br />Maximum <br />Secondary <br />Contaminant <br />Level <br />(milligrams <br />per liter) <br />Iron <br />(milligrams <br />per liter) <br />0.71 <br />0.46 <br />0.03 <br />0.18 <br />1.15 <br />0.30 <br />Manganese <br />(milligrams <br />per liter) <br />0.11 <br />0.40 <br />0.26 <br />0.05 <br />0.15 <br />0.05 <br />The table above shows the iron and manganese levels detected in the five City wells <br />compared to the maximum secondary contaminant levels set by the EPA Secondary <br />Drinking Water Standards and the Safe Water Drinking Act. Iron and Manganese levels <br />above the secondary contaminant maximums will generate resident complaints. <br />Neither iron nor manganese in water presents a health hazard. However, their presence in <br />water may cause taste, staining, and accumulation problems. Because iron and <br />manganese are chemically similar, they cause similar problems. Iron will cause reddish - <br />brown staining of laundry, porcelain, dishes, utensils, and even glassware. Manganese <br />acts in a similar way but causes a brownish -black stain. Iron and manganese are <br />concentrated in ground water by contact with rocks and minerals. <br />The amount of iron or manganese in raw ground water needed to cause the above <br />mentioned problems varies with each household situation. The EPA secondary <br />contaminant levels have been set based on an average level when taste, staining and <br />accumulation begin. <br />2 <br />