We've had the home, and with it the iSpring water system, for 5 years and have found that we've never changed a thing . After the faucet (a separate issue) started leaking, I replaced it and ordered this filter set. Our community relies on groundwater filtered from the mountains, and normally the water quality is already much better compared to average LA water, but mostly to keep my parents happy, I've started a two-day overhaul by doing cleaned the filter housing and soaked all the water. System in diluted Clorox. The thing that was dripping from the stock tank was disgusting, lots of slimy black particles that really made me wonder what we've been drinking for the last few years. But once everything was swapped out, the water tasted noticeably better, to everyone's delight. One small issue was that the 5th didn't come with a snap-on plastic tube adapter, but I was able to get an adapter from Home Depot. . You will also need white tape to prevent the connection from leaking.
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