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Friday, Apr 24, 2026

Toilet Parts Maker Buys in Netherlands

San Juan Capistrano-based toilet component maker Fluidmaster Inc. acquired on undisclosed terms WISA BV, a restroom components designer and maker in the Netherlands.

WISA Managing Director Mark Grosfeld and his management team will join Fluidmaster.

Fluidmaster is known for its products in North America but also sells in the United Kingdom, continental Europe, China and Turkey. The family-owned and -operated company ranked No. 65 on the Business Journal’s list of Orange County’s Largest Private Companies last year. It had $232 million in revenues in 2014, and employed 140 locally and 1,500 total.

WISA designs and manufactures concealed and exposed cisterns, controls and other restroom toilet products for clients in Europe.

—Michael de los Reyes

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