Bradford White is one of the largest residential and commercial water heater manufacturing companies based out of the United States. It is headquartered in the city of Ambler, Pennsylvania, while its manufacturing facilities are positioned in Middleville, Michigan. They produce a variety of different water heaters including electric, natural gas, heating oil, and propane-fueled versions.

The A.O. Smith Corporation is the largest residential and commercial water heater and boiler manufacturing company in the entire continent of North America. It was founded in 1904 by Arthur Oliver Smith in the city of Milwaukee, Wisconsin and the corporation also happens to still be headquartered there. The A.O. Smith Corporation is one of the largest water treatment companies worldwide (especially in Asia) and has roughly 24 different locations throughout the world.

Moen primarily specializes in making different types of water faucets and other fixtures. It is currently headquartered in a town named North Olmstead, Ohio. Moen is a company that was initially founded by an inventor named Alfred M. Moen. However, this company is now owned and operated by the Fortune Brands Home and Security Company.

Delta Faucet Company is a manufacturing company that was founded in 1954 by the Masco Corporation, which still owns it to this day. The Delta Faucet Company is one of the top organizations in the world in making pristine, beautiful faucets, shower heads, flush valves, and other related bathroom and kitchen accessories.

Pfister, formerly known as Price Pfister, is a manufacturing company that specializes in the creation of bathroom and kitchen faucets, showerheads, shower systems, plumbing fixtures, and other water-related accessories. Pfister was originally founded in 1910 by William Pfister and Emil Price. Today a company known as Spectrum Brands Holdings Incorporated owns Pfister.

Halo Water Systems is a company that focuses on the optimal filtration of water. They focus on offering a vast variety of water filtration options to fulfill any household needs. These filtration options can include both point of entry and point of use systems that utilize different types of purification, filtration, sterilization, or other types of water conditioning systems as requested by the client.

Glacier Bay is an in-house brand that is owned by The Home Depot Inc. The Home Depot is popularly known as the biggest home improvement supply retailing company in the United States. Its brand, Glacier Bay, primarily focuses on the manufacturing of kitchen or bathroom sinks and faucets, as well as any other related items.

Toto Ltd., sometimes simply known as TOTO, is a Japanese manufacturing company that is also the largest toilet producer in the world. It was founded in 1917 in Kitakyushu, Japan where its headquarters still reside. Toto Ltd. owns manufacturing facilities in nine different countries and is most famous for their Washlet invention, which is an electronic bidet cleansing toilet seat.

American Standard Brands is a large North American plumbing fixture manufacturing company. It was formed in 2007 when its predecessor company American Standard Companies went through a breakup of the company. It was initially known as American Standard Americas until two other large plumbing fixture manufacturing companies known as Eljer and Crane Plumbing merged with it to form the current American Standard Brands.

The General Electric Company, also more commonly known as G.E., is a multinational conglomerate that was initially founded by Thomas Edison, J.P. Morgan, and three other partners, in the state of New York. G.E. is not only one of the largest companies in the United States and the world, but they are one of the leading manufacturers of lighting fixtures and other electronics.

The Whirlpool Corporation is the largest multinational home appliance manufacturing and marketing company in the world. It was founded in 1911 in the city of Benton Harbor, Michigan by Louis and Emory Upton. The Whirlpool Corporation employs over 92,000 people in over 70 manufacturing and product research centers located around the world.

Grohe is a large manufacturing company that specializes in making sanitary fittings. It was founded in 1936 by a man named Friedrich Grohe in the city of Hemer, Germany and is currently headquartered in Dusseldorf, Germany. However, Grohe has been a subsidiary of the Lixil Group based in Japan since 2014.

The Kohler Co. is a large manufacturing company that was both founded and still currently headquartered in its namesake city, Kohler, Wisconsin. It was founded in 1873 by John Michael Kohler and Charles Silberzahn. The Kohler Co. is well-known primarily for its plumbing fixtures and products, but it also manufactures products in a variety of different industries such as furniture, engines, and tiles.