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.
Algae in Water
Algae in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Sulfur Smell in Water
Sulfur Smell in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Arsenic in Water
Arsenic in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Tannins in Water
Tannins in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Copper in Water
Copper in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Radium in Water
Radium in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Manganese in Water
Manganese in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
E. coli in Water
E. coli in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Bacteria in Water
Bacteria in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Nitrate(s) in Water
Nitrate(s) in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.