J.F. Brennan Company, Inc.

Environmental ServicesWisconsin, United States501-1000 Employees

Brennan's mission is to create and execute innovative solutions to the world’s most complex maritime, environmental, and infrastructure challenges.

Working closely with public and private owners of water-based infrastructure since 1919, we operate throughout coastal and inland waterways nationwide, maintaining a large fleet of marine and amphibious equipment

Everything we do takes place around the water. As a result, we have the right people, specialized equipment, and proper programs in place to mitigate associated risks. 

Over the past 100 years, our high-quality work and transparent communication with clients have made us a preferred contractor for the US EPA, US Army Corps of Engineers, and private infrastructure owners across the country. 

Why Brennan? 
Safety, quality, and environmental stewardship are long-standing principles within our organization. For the benefit of our employees, clients, and communities, we operate our business to comply with international standards and regulatory requirements. Appropriately, we are certified to ISO 9001: 2015 Quality Management System, ISO 14001: 2015 Environmental Management System, and ISO 45001: 2018 Occupational Health and Safety Management System.

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