This system has only been installed in our house for a year and for the first 6 months it seemed to work fine BUT. We now have LIGHT BLUE WATER from all our faucets and two toilets. We have to constantly run large amounts of water through the system to get rid of the BLUE WATER, which means we are using way more water than we need. Also, the filters don't seem to last very long, 3 months at most, making this system very expensive. After studying the information on the internet, we learn that citric acid may attack cold water copper pipes. For this reason we have now disabled this lock because it is probably very harmful to health (not to mention the installation). Attention buyers, we definitely do NOT recommend this product.
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