Gryphon and Portfolio Company News

Wind River Environmental Acquires Stright Sewage Disposal Company

Marlborough, MA and Stamford, CT -

Wind River Environmental (“Wind River”) the nation’s largest full-service non-hazardous liquid waste management service provider, announced today that it has acquired the business assets of Stright Sewage Disposal Company, Inc., to increase its service delivery capabilities in Southern Connecticut.

Stright Sewage Disposal Company, Inc. (dba Stright Septic) is a local provider of septic tank pumping, septic inspections, and septic system repairs founded in 1938.

John O’Connell, Wind River’s CEO, stated, “Southern Connecticut has always been a very important market for us and the Stright acquisition further solidifies our position as the market leader.”

About Wind River

Headquartered in Marlborough, Massachusetts, Wind River Environmental ( and its affiliated companies inspect, service, repair, and install a broad array of non-hazardous liquid waste systems, including septic tanks, grease traps, pumping, and industrial waste systems. The company offers a full array of services to residential, commercial, and municipal systems. In 2017, the company serviced more than 25,000 commercial and 52,000 residential sites. Operating from Maine to Florida, Wind River has over 700 team members all of whom are graduates of Wind River University including over 350+ highly trained technicians.

About Gryphon Investors

Based in San Francisco, Gryphon Investors ( is a leading private equity firm focused on profitably growing and competitively enhancing middle-market companies in partnership with experienced management. Managing over $2.6 billion of equity investments and capital since 1997, the firm has an extensive track record of leading equity investments of $50 million to $200 million per portfolio company with sales ranging from approximately $100 million to $500 million. Gryphon prioritizes investment opportunities where it can form proactive partnerships with owners and executives to build leading companies, utilizing Gryphon’s capital, specialized professional resources, and operational expertise. Gryphon closed its fourth private equity buyout fund, Gryphon IV, in November 2016 at $1.1 billion, and raised a $100 million captive mezzanine fund, Gryphon Mezzanine Partners, L.P., in August 2017.


Samantha Leahy

Wind River Environmental