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In early July a header pipe in a filter at water treatment plant three near Centennial High School failed. The filter particles are larger and heavier so they will not flush out easily, the city needs to push a lot of water through the system to get them moving. The source of the issue has been resolved, but the residual issue of discolored water is still being addressed. Blaine Public Works crews are doing flushing to concentrate the flows in the main pipes affected. Unfortunately those filter grains also act like coffee grounds, as the water flows past/over them they give off the iron and manganese which creates the stained brown or yellow water.Please report any water clarity issues by calling or texting the following numbers.Public Works: 763-785-6165, available 7AM - 3PMBlaine City Hall: 763-784-6700, available 8AM - 4:30PMAfter Hours Text: 763-292-4227After Hours Public Works Emergency Dispatch: 763-427-1212
Minnesota Department of Health Water Quality Information
Manganese in Drinking Water
Comparison of State Water Guidance and Federal Drinking Water Standards
Guidance Values and Standards for Contaminants in Drinking Water
The city continues to test the water quality in the areas of the city that have recently experienced discolored water. The latest test results show between 360ppb and 630ppb of manganese in the water. The Minnesota Department of Health recommends that until the water tests at less than 100ppb of manganese residents should use bottled or treated water for formula fed infants under the age of 12 months.The Minnesota Department of Health has prepared a summary document with information regarding manganese in drinking water. It can be viewed by clicking the link below.If your water has returned to normal and runs clear, it is safe to assume that the iron and manganese levels have decreased in your area. Blaine Public Works continues to respond to resident reports of discolored water and flush the water system as needed.Because of this inconvenience, the City of Blaine will be providing residents in the affected area with a $10.88 reduction on their next utility bill. This is the equivalent of 8,000 gallons (one month of average household use) of free water. The City of Blaine quarterly utility bill combines charges for water, sewer, stormwater, garbage, and recycling.As a city, we have high standards for the services provided to Blaine residents. In this case, the city did not meet those standards and we will work diligently to provide better service going forward.
The City of Blaine has conducted water quality tests at locations east of Lexington Avenue where the city has been experiencing discolored water. An independent lab tested the water and prepared the results.The test results show higher than normal levels of iron and manganese. The city expected the results to show higher levels, as this is what has been causing the discolored water. Iron and manganese are considered secondary standards and there are no requirements in place to test for these elements.City staff, with the help of an outside engineering firm, are continuing to monitor the situation and adjust treatment methods as needed to improve water clarity and reduce the levels of iron and manganese.On July 17, the city contacted the Minnesota Department of Health (MDH) to determine if the elevated levels of iron and manganese presented any public health concerns. There is no public health guidance from MDH or the EPA for iron. MDH advised the city that there are no short-term health risks with elevated levels of manganese for individuals over the age of one at the levels found in the city’s test results. At levels found in the samples, all risks are related to long-term chronic exposure, the EPA value of 300ppb for manganese is a lifetime health advisory. MDH has informed the city that most household water softeners would remove the manganese.MDH did advise that until the water tests at less than 100ppb of manganese it is recommended to use bottled or treated water for formula fed infants under the age of 12 months.The test results the city received on July 17 showed manganese levels between 100ppb and 640ppb. The city has now implemented changes, recommended by the independent engineering consultant, to the water treatment process. Additional adjustments will be made as needed.No additional iron or manganese from the failed filter are entering the water system at this time. Reports of discolored water have decreased daily and crews have observed improvements in water clarity. Monitoring will continue and ongoing updates will be posted on BlaineMN.gov, and MDH guidance regarding infants should be followed until further notice.If you are still experiencing discolored water, please contact the city in one of the following ways.Public Works: 763-785-6165, available Monday – Friday 7AM - 3PMBlaine City Hall: 763-784-6700, available Monday – Friday 8AM - 4:30PMAfter Hours Text: 763-292-4227After Hours Public Works Emergency Dispatch: 763-427-1212
On July 14 the city contacted an outside engineering consultant to review the methods that are being used to address this issue and to look for additional ways to clear the water system.The city has also developed a system to track resident reports of discolored water. If you experience discolored water please report it by calling the city during normal business hours or by texting the city after hours.Public Works: 763-785-6165, available 7AM - 3PMBlaine City Hall: 763-784-6700, available 8AM - 4:30PMAfter Hours Text: 763-292-4227As of July 10 the area north of Lochness Park to the end of Lever Street, between Lexington Avenue and Sunset Avenue was flushed and clean. On July 11 the on-call public works staff responded to a report on 124th Avenue, three or four hydrants were flushed. The water was a little yellow but it cleared up within a few minutes. On July 13 the city received a number of reports of discolored water, crews are doing the flushing from Lochness Park north again.This flushing is moving a lot of water through the system and the city needs to balance the water tower levels to make sure they are not getting too low. The city will continue to flush until the system remains clear but there is not an estimated time frame for completion.