Serving the Environmental Industry

For Over 25 Years

Sampling & Monitoring

EST’s OSHA-40 Certified field chemists perform groundwater sampling, wastewater sampling, stormwater sampling, and soil vapor Intrusion (SVI) sampling at public and private sites throughout the Northeast.

Pipeline Services

EST’s NASSCO PACP and MACP certified technicians perform continuous flow monitoring, CCTV Investigations, dye testing, manhole inspections, building inspections, and smoke testing in conjunction with various collection system studies throughout the region.

Operations & Maintenance

Our licensed treatment system operators perform routine operations and maintenance of industrial wastewater and groundwater treatment systems to ensure compliance with local state, and federal regulatory requirements.

From Our Customers

Marjorie Merisier

Marjorie Merisier

Environmental Compliance Officer – Dana-Farber Cancer Institute


EST provides Dana Farber with neutralization system maintenance and sampling/analyses for our facilities. I would absolutely recommend them as they provide invaluable expertise and consistent high-level customer service.

Wayne E. Bates, PhD, P.E.

Wayne E. Bates, PhD, P.E.

Principal Engineer – Tighe & Bond


I’ve been working with EST for over ten years on various industrial wastewater projects.  They are highly responsive, affordable, and easy to work with, especially from a sample collection standpoint.  They respect the relationship between the engineer and the client and they consistently provide reliable support and information.

Paul Richard

Paul Richard

Senior Program Director, WOOD PLC


For over twenty years, EST has assisted me with various wastewater and stormwater compliance projects. As an extremely busy project manager, I have high standards and expectations for anyone I’m working with, especially when I’m entrusting them with clients I’m responsible for managing. With EST however, I never have to worry as they are always professional, quick to respond, and they take my client’s compliance needs very seriously. I highly recommend their services.

Chad Kershaw

Chad Kershaw

Project Manager, CDM Smith


When it comes to sewer pipeline services for municipalities, we always reach out to EST. They provide competitive pricing while meeting our often demanding schedule. More importantly, EST completes quality work and quickly gains the trust of our clients. I would recommend them to anyone who needs sewer pipeline investigation work completed.

Arthur J. Cunningham PE

Arthur J. Cunningham PE

LSP Director of Engineering – Capaccio Environmental Engineering, Inc.


One of our most important clients needed wastewater sampling performed and each location had its own unique challenges. We knew EST was resourceful, flexible, had a deep bench, and a can-do attitude so we thought of them to help. The entire EST team made this project a great success for us and our client. We would not hesitate to recommend EST for these and other services as we, and our clients, have had very positive experiences working with them.

New England Office

51 Fremont Street Needham, MA 02494

Mid-Atlantic Office

127-G Gaither Drive Mount Laurel, NJ 08054