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For some Woodbury residents this may not be a problem, but for others the problem just will not go away. Those blue and green stains could be a sign that your water softener is regenerating too often. Over-regenerating has a tendency to make water become corrosive toward the copper pipes and faucet fixtures in your home. The pink stains may be caused by the kind of salt you're using in your softener. Don't worry though; these problems are easier to correct than you think!
Yes, there are three main types of salts that can be used in softeners.
A major drawback of salt-based ion-exchange water softeners is the chloride they produce and discharge into septic or sewage systems. Chloride from salt can seep into and pollute groundwater from on-site septic systems. Chloride also enters the environment via wastewater treatment facilities. Because facilities aren’t designed to remove it, chloride ends up in rivers, lakes and streams. High levels of chloride in the environment are toxic to fish and aquatic creatures. For more information, visit the Minnesota Pollution Control Agency website at https://www.pca.state.mn.us/water/skinny-water-softeners
New homes built with copper pipes are especially susceptible to corrosive water conditions because the copper pipes have not had a chance to become coated inside. As recommended by the MDH, it is best NOT to soften the water in a new house for a period of three to five months after occupancy. This can be done by simply bypassing the water softener's filter medium. See your owner's manual for directions on bypassing your softener. Many new homes are built with PEX and not copper.
The MDH also recommends NOT softening the cold water supply to your kitchen faucet or your outside hose connections. This will significantly decrease the amount of sodium in your diet and save you money by not softening water unnecessarily.
Having your water softener properly set for household size and 13.5 grains of hardness will reduce salt use and increase efficiency in water use by avoiding unnecessary regeneration.