The presence of the minerals iron and manganese are found at various levels in most water sources. These minerals can cause problems from discolored water, to staining of plumbing fixtures and some may even affect taste. These problems occur before becoming a health hazard. Because these minerals build up over time on most portions of the distribution system, flushing is done by the Public Works staff to minimize negative effects. Please call 253-851-8136 to report an issue.