A–Z contaminant guides
Water Problems Library — Find What’s in Your Water
Every common water problem in one place: plain-English guides covering what each contaminant is, where it comes from, the legal limit in drinking water, and the filter media that actually removes it — from lead and hard-water scale to bacteria, silica, and MTBE.
Pharmaceuticals in Water
Pharmaceuticals in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Benzene in Water
Benzene in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Barium in Water
Barium in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Pesticides (Herbicides) in Water
Pesticides （ herbicides） in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Chloride in Water
Chloride in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Well Water Problems
Well Water Problems in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Giardia in Water
Giardia in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Selenium in Water
Selenium in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Ammonia in Water
Ammonia in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
VOC in Water
VOC in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.