Flat year for equipment suppliers

Publicly-quoted US water equipment suppliers generally had a poor year in 2006, dashing expectations that the sector would bounce back after taking a pasting in 2005.

Among the producers of ultra-violet disaffection systems and reverse osmosis home units, Calgon and Pentair both registered double-digit percentage declines in their market caps over the course of 2006.

Calgon shares tumbled 4% in November, after a Canadian federal court invalidated the company’s patent for using ultra-violet light to control cryptosporidium bacteria – reinforcing a similar ruling from a US ...

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