HTH is manufactured by Lonza. Lonza is a leading specialty chemical manufacturer and supplier to the global water treatment market. Our product technologies are used to control the growth of microorganisms such as bacteria, algae and fungi in everything from pools and spas to drinking water to food hygiene and industrial cooling, papermaking and related markets. With its 2011 acquisition of Arch Chemicals, Lonza became the world’s largest supplier of swimming pool and spa sanitizers and related treatment products, including the world-famous HTH brand of chlorine-based sanitizers. Lonza also offers, through the Arch Chemicals subsidiary, the bromine-based Leisure Time and Brilliance for spas sanitizers, the PHMB-based Baquacil family of products as well as Pulsar feeders and sanitizers for commercial pools and water parks. Our well-known and popular brands BAQUACIL BaquaSpa Being Brilliance HTH PooLife Pool Breeze and Pulsar are recognized around the globe.