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Manganese Level <br />0.4 <br />0.35 <br />0.3 <br />0.25 <br />0.2 <br />0.15 <br />0.1 <br />0.05 <br />0 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> ~'- _ <br /> ~, <br /> <br /> .,; - <br /> <br /> <br /> <br /> <br />Iron Levels <br />1.2 <br />1 <br />0.8 <br />0.6 <br />0.4 <br />0.2 <br />0 <br />Twin Lakes Elementary <br />^ Welf # 7 <br />^ Well # 8 <br />^ Twin Lakes Estates <br />®Johnson Street Tower <br />Recommended <br />maximum Iron level is <br />0.3 ppm <br />-- <br />The Safe Drinking Water Act (SDWA) secondary standard (aesthetic not <br />health related) for iron in drinking water is 0.3 parts per million (ppm); for <br />manganese it is 0.05 ppm. If the water contains more than 0.02 ppm of <br />manganese, the operator should implement an effective hydrant flushing <br />program in order to avoid customer complaints. <br />