Any way you measure it, the 144,000-quare-foot (13,378- square-meter) Hospital Central Services Association (HCSA) co-op laundry managed by Foussard Montague Associates Inc., is a larger-than-average healthcare laundry. But its scale as a two-shift plant, processing 860,000 lbs. a week with 300-plus employees, only tells part of the story. The heart and soul of HCSA’s growth since this plant south of Seattle opened in 2013, is its commitment to high standards.

“I think you would describe this plant as ‘empowered,’” says Phil Foussard, president of Foussard Montague, a laundry management company recently acquired by HHS LLC, a privately held support services ...