15 Biggest Water Treatment Companies in the World

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7. Severn Trent

Based in the United Kingdom and part of the Severn Trent plc. group, the company is listed on the London Stock Exchange and is a member of FTSE 100 Index. It was founded in 1989 and has its headquarters in Coventry United Kingdom. Amongst its services is providing residential places water hygiene systems to keep away bacterial attacks. It also provides cooling tower systems, steam boiler systems, industrial and domestic water systems etc.

21 Countries with the Purest, Best Tasting Tap Water in the World

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