I have used a home sump filter for many years. These 1 micron cartridges save lives, especially when it comes to the life of boilers, water heaters and anything that uses water in the home. New York City is said to have the best tap water, but I still change the filter every four days or earlier when I'm doing laundry. I was told a long time ago, and it's true, use a filter or be a filter.
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