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    • Does a Refrigerator Filter Remove PFAS? What NSF P473 Actually Certifies

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    Fridge Filters Which Water Filter Fits My Fridge? Find the Right One by Model Number Midea Refrigerator Water Filter: MIWF6200 vs MIWF8200 vs MIWF8900 Kenmore Refrigerator Water Filter: Cross-Reference by Model Does a Refrigerator Filter Remove PFAS? What NSF P473 Actually Certifies Reverse Osmosis Beyond PFAS and Lead: About 1 in 4 US Systems Reported Another Contaminant Over a Limit The 2027 EPA Lead Rule Nearly Triples the Water Systems Over the Line About 1 in 9 US Water Systems Averaged PFOA or PFOS Above the EPA Limit Does a Refrigerator Water Filter Remove Lead? What NSF 53 Actually Means Softeners & Whole-House Water Softener Control Valve: How to Identify Yours Before Ordering Parts Salt-Free Water Softeners: What TAC Systems Do (and Don’t) Water Softener vs Whole-House Filter: Which Problem Do You Actually Have? Water Softener Salt Types: Rock vs Solar vs Evaporated Pitcher & Faucet Filters Faucet Mount Filter Fit: How to Tell Which Faucets Work Boil-Water Advisory Checklist: What to Do During and After [2026] Boil-Water Advisory: What Your Filter Can and Cannot Do NSF Filter Certifications Explained: 42 vs 53 vs 58 vs 401 vs P473
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Pillar 2 – Contaminant Guides

A water sample being lab-tested for nitrate in drinking water, next to a baby bottle representing the infant health risk

Nitrate in Drinking Water: The Infant Risk, the EPA Limit, and What Actually Removes It

Nitrate in drinking water is one of the few contaminant stories with a genuine emergency dimension. For most water problems, “test it…

August 21, 2026 · 13 min read

A glass of tap water next to an open consumer confidence report, illustrating chloramine vs chlorine identification for filter selection

Chloramine vs Chlorine: How to Tell What Your Utility Uses (and Why It Changes Your Filter)

Chloramine vs chlorine is not a question most homeowners think to ask – until a filter that used to fix the “pool…

August 21, 2026 · 13 min read

A glass of tap water next to a water-testing kit, representing testing for chromium-6 in drinking water

Chromium-6 in Drinking Water: EPA Status, Health Risk, and What Actually Removes It

Chromium-6 in drinking water – the contaminant the Erin Brockovich case made famous – has no separate federal limit today. The EPA…

August 18, 2026 · 13 min read

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Water by the Book.

The honest field guide to home water filtration. Free tools, plain-English guides, and what the data actually says about your water.

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  • Fridge filters
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  • Softeners & whole-house
  • Pitcher & faucet filters
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