Most Recent Articles

Learn how to test for VOCs like benzene 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 how pesticides from golf courses can reach groundwater, what research says about health risks, and how to test your tap water for safety.

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 how reverse osmosis filters work, which contaminants they remove, system costs, upkeep, and whether or not an RO system suits your home.

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.