Category: Guides
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A water softener uses ion exchange to reduce hardness minerals; calcium and magnesium. Learn how it works, NSF 44 certification, costs, and who needs it
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A sediment water filter screens particles like sand, silt, and rust from your water. Learn how micron ratings work, filter types, costs, and when you need one.
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A ceramic water filter uses microporous ceramic media to physically screen out particles, sediment, and cysts. Learn how it works, costs, and limitations.
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UV water purification uses ultraviolet light to disinfect water — not filter it. Learn how NSF/ANSI 55 Class A vs. Class B works and what it costs.
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Your water filter quietly stops reducing contaminants while still flowing water. The only safeguard is a replacement schedule based on time and capacity
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A carbon water filter uses adsorption to reduce contaminants — but GAC, block, and catalytic carbon differ in key ways. Learn which type fits your water
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Understand how a reverse osmosis system works, what NSF/ANSI 58 certifies it to reduce, what it costs to own, and whether your water data warrants one
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Both filters say ‘NSF certified’ – but one is certified to Standard 42 and the other to Standard 53. So what?
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Some content on this site is created with AI assistance and reviewed by our editorial team for accuracy. Last updated: April 2026 | Reading time: ~10 minutes City water and well water both come out of a faucet, but the similarities end there. City water is treated, monitored, and regulated by the EPA before it…