David Anderson covers water treatment and municipal water quality for Complete Water Guide. His work includes city-by-city tap water reports built from published utility data, PFAS testing results for bottled water brands, and practical comparisons of filtration equipment such as shower filters and softeners. He works primarily from primary sources: EPA limits, state and city consumer confidence reports, and independent lab testing.
The cartridge price and the running cost rank filters in opposite orders, and one popular filter's cost swings five-fold depending on nothing but your…
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Search for a per-brand microplastics ranking and you will find several. They cite a real study that never named a single brand. We traced…
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Certification is granted per individual claim, not per standard, which means a filter can be truthfully labelled "NSF/ANSI 53 certified" while removing almost nothing…
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The price of testing your own well swings from free to $1,015 depending on which state you live in. Most published figures are years…
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Owala says its own 32oz bottle will not fit a car cup holder. Hydro Flask says the opposite about its 21oz. Both statements come…
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Orlando stopped adding fluoride in July 2025, and one number in its own report is now at 90 percent of the legal limit. Disney…
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Four boil water advisories hit New Orleans between March and August 2026. Three were precautionary. Knowing which one was not is the difference that…
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Houston publishes three numbers that decide whether you need a filter, a softener, or nothing at all. Two of them differ between neighbourhoods on…
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One bottled water recall is active in the US right now. Most of the recalls people search for never happened, and we checked each…
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There is no safe level of lead in drinking water, and it comes from your plumbing rather than your utility's source. The action level…
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