Contaminants Articles

Suspect a dead animal in your well? Learn how to test for coliform bacteria and what to do to disinfect before use.

Learn how to test for VOCs like benzene, TCE, and chloroform, why NSF/ANSI certification matters, and which filters are proven to reduce these chemicals.

Orange stains or metallic taste? Discover what causes iron in water, if it’s harmful, and how to test and treat your tap or well water.

Learn what “parasites” really mean in water, where they’re found, and why treated tap water is rarely a source of infection.

Why does my water taste weird? The new and improved ultimate tap water taste guide has all your bases—bitter, metallic, sweet, salty, plastic—covered.

Learn how nitrate enters drinking water, health risks like blue baby syndrome, safe nitrate levels, and the best ways to test and treat your water.

Learn why your water is yellow, brown, rusty, green, cloudy, murky, or oily—as well as what you can do about it to make sure your water is safe to drink.

Discover common pathogens that contaminate drinking water, the health risks they pose, and how to test and protect your water at home with Tap Score.