Onsite Engineering focuses on providing cost effective and efficient water related consulting engineering services to our public and private clients throughout New England. Our services include evaluations, feasibility studies, design, construction administration, asset management, funding/grant assistance, permitting assistance, and expert witness testimony. At Onsite, we are focused on you, the Client, and promise that we will work tirelessly to complete projects correctly, on time and on budget. These are the core principles on which Onsite Engineering, Inc. was founded, and are the standards by which we operate.

Our Services:


Onsite Engineering provides comprehensive professional services related to many areas of wastewater engineering. Our staff members have been involved with the design and permitting of collection systems, treatment facilities and effluent disposal systems, as well as conducting all aspects of evaluations, feasibility analyses and reserve budget studies. In addition to being licensed professional engineers, members of our staff hold credentials as certified soil evaluators, Title 5 system inspectors, and wastewater treatment facility operators.

Our Wastewater Engineering Services Include:



Onsite Engineering’s water division provides engineering consulting services to meet a wide variety of our clients’ needs. As communities become more developed and populations increase, providing sufficient quality and quantity of potable water is becoming more and more difficult. Over the years, the staff at Onsite has assisted both private and municipal clients with their important potable water projects, from water supply development and distribution to management of multi-million gallon per day water treatment facilities.

Our Water Engineering Services Include:



As the protection of surface and ground waters, as well as sensitive environmental receptors, have become the focus of Federal and State Regulators, how individuals manage their stormwater discharges is coming under more intense scrutiny. Onsite Engineering staff members are well versed in the recent regulatory changes that affect both the municipal and private sector and have designed numerous stormwater management systems to meet these more stringent requirements.

Our Stormwater Engineering Capabilities Include:


Construction Project Management

At Onsite Engineering, we have experience with all phases of construction project management for private and public sector projects that range from a few thousand dollars to several million dollars. Our experience includes both vertical and horizontal construction projects, as well as projects financed under State Revolving Fund (SRF) and other grant programs. To reflect recent changes in public bid laws, Onsite Engineering has expanded its capabilities to provide Owner’s Project Manager Services to our Clients. Using Onsite Engineering is a cost effective way to meet the OPM requirement while providing true value engineering review that is always performed with the best interest of the client in mind.

Our Construction Project Management Areas of Expertise Include: