Carollo Engineers opens new Philadelphia office

Sept. 11, 2023
The water engineering and consulting firm opened a new office to support its continued growth in the Mid-Atlantic region.

Carollo Engineers, a water engineering and consulting firm, announced the opening of a new office in Philadelphia.

The expansion comes in response to the company’s continued growth in the Mid-Atlantic region.

The new office is located in proximity to the firm's established locations in northern New Jersey, New York City, and Washington D.C.

"Our decision to establish a presence in Philadelphia stems from our commitment to better serve our clients and partners in the Mid-Atlantic region and advances our ambition to be the best water consulting firm," said Michael J. MacPhee, client service director for Carollo. "This expansion allows us to harness the local talent pool and collaborate closely with clients to deliver innovative and sustainable water solutions."

Coinciding with the opening of the Philadelphia office, Carollo announced three new water professionals who have joined the firm:

  • Jason Marie, PE – As a Client Services Manager, Jason brings more than 20 years of experience in the planning, design, and construction of water and wastewater treatment facilities. His proficiency extends to distribution systems, surface and groundwater treatment processes, and management of large-scale infrastructure projects.
  • Milissa Hirst, PE – Milissa has 27 years of experience delivering projects from planning and permitting through the traditional design/bid/build process. Her specialization encompasses the planning and design of water and wastewater treatment facilities and infrastructure, hydraulic profile evaluations, and capital improvement planning.
  • Jill Marie, PE – With 23 years of civil and environmental engineering experience, Jill excels in leading medium- to large-scale infrastructure projects. Her expertise spans water and wastewater treatment facilities, distribution systems, pump stations, trenchless applications, and more.

Carollo’s notable projects in the East region include pipeline condition assessment for WSSC Water, tertiary filter rehabilitation for DC Water, and one of the largest drinking water treatment upgrades in the country for Nashville Metro Water Services.