McSweeney Associates

South Shore Septic Design

McSweeney Associates is a small engineering company that has been servicing the south shore for over 100 Years.

The company mainly focuses on the design for either upgrading  an existing septic system or the design of brand new one.

Along with the wastewater McSweeney Associates also does general land use work from wetlands permitting to well permitting (click here for services).


Terence McSweeney

Terry is the third generation owner of McSweeney Associates. Born and raised in Hingham Massachusetts he graduated from the University of Maine with a degree in Micro-Biology, After school he worked as a Licensed Site Professional for a few years until he joined his father, Brian McSweeney, in running McSweeney Associates. He know runs the business and  is currently a Registered Sanitarian as well as licensed soil evaluator. With over 30 years in the septic design business he is well equipped to handle any situation.

Colin McSweeney

Colin was born and raised in Hanson Massachusetts. He then attended the university of Roger Williams where he graduated with a degree in Environmental Science. He then attended the University of Wentworth in Boston where he got a certificate in Land Surveying. He now works with his father Terence Mcsweeney doing the survey and wetland work.