Faucets and Plumbing

Certification for faucets, pipes and plumbing fixtures helps you find products that have been tested for safety and performance.

Faucets and Plumbing Products

Faucets and plumbing products intended for contact with drinking water should be tested and certified to NSF/ANSI Standard 61: Drinking Water System Components.

Lead in Schools and Older Homes

Lead is a common hazardous contaminant found in the plumbing systems of older homes, businesses and schools.

Plumbing Product Markings

Learn about common markings found on plumbing system components.

Water Filters

NSF International’s scientists give you information about water filters as well as reverse osmosis and other water purification systems.