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Every year, your water utility publishes a report showing exactly what’s in your water. The data is free and incredibly useful — if you know how to read it.
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NSF certified vs NSF tested — they’re not the same. Learn what NSF certification means, the key standards, and how to verify any filter’s claims
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Chlorine and chloramine need different filters. Learn which disinfectant your water uses, why it matters, and what carbon type to look for
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A $15 test strip kit tells you something is in your water. A certified lab test tells you exactly what and how much. Knowing when to use each saves money and prevents bad filter choices
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TDS is one of the most misunderstood measurements in residential water quality. It’s a real metric, but it doesn’t tell you what most people think it does
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Most water filters look the same on the outside — a cartridge, a housing, maybe a faucet attachment. But the technology inside determines what a filter actually does to your water.