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.
Low pH in Water
Low pH in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Nickel in Water
Nickel in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Silica in Water
Silica in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
MTBE in Water
MTBE in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Cyanide in Water
Cyanide in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Viruses in Water
Viruses in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Legionella in Water
Legionella in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Cryptosporidium in Water
Cryptosporidium in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Boron in Water
Boron in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.
Coliform in Water
Coliform in drinking water: where it comes from, EPA limits, and which filter technologies actually work — honest comparison, test-first guidance, no marketing claims.