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A History of Progress

Since 1899, Weston & Sampson has been dedicated to enhancing the communities where you live, work, and play.

Dedicated to Engineering Excellence

Learn more about the core values that have driven our work for over a century.

Our Mission & Vision

When Robert Spurr Weston began his consulting practice in 1899, he established a tradition of engineering excellence.

A pioneer in the field of sanitary engineering, Weston, along with business associate George Sampson, formed the Weston & Sampson partnership in 1916. Together, they were instrumental in developing innovative approaches to the new science of water treatment. The engineering practices fostered by Weston & Sampson continue to this day as the basis of state-of-the-art treatment processes.

Today, Weston & Sampson is a 100% employee-owned, full-service environmental and infrastructure consulting firm with more than 1,000 professionals, all committed to excellence in their chosen fields.

Innovation — Although we have strong ties to the past, progressive thought has always been a part of the Weston & Sampson tradition. Our ability to approach problems from a unique perspective has led to many innovative and cost-effective solutions and has earned us recognition within our profession.

We maintain our tradition of excellence by attracting the most talented professionals in the field and by placing them in an environment that fosters inventive thinking and encourages new ideas to better serve our clients.

Quality — We define quality as following our tasks through to completion, paying attention to detail, ensuring first-rate work performance, and addressing our clients’ needs in a timely manner. We are constantly re-examining the way we work so that we can provide services in the most efficient and cost-effective manner possible.

Now in our second century of service, our clients benefit from our long history of progress and our confidence in the promise technology holds for a brighter future.

More Than a Century of Excellence

Our innovative, award-winning projects have been recognized by multiple industry organizations.

See Our Awards

Celebrating 125 Years of Pioneering Water Treatment Advancements

Now a 100% employee-owned firm, we have evolved from a single-engineer office to a leading multi-disciplinary consultancy on the East Coast.

  1. 1899
  2. 1916
  3. 1950s
  4. 1970s
  5. 1980s
  6. 1990s
  7. 2000s
  8. 2010s
  9. 2020s

1899

January 1899
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Robert Spurr Weston opens his sole proprietorship at 14 Beacon Street, Boston, MA.

1916

March 1916
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Weston is joined by George Sampson and together they form the Weston & Sampson partnership.

Weston & Sampson is responsible for the design of one of the first reinforced concrete elevated water storage tanks and successful iron removal and rapid sand filtration water treatment plants in the country.

1950s

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Sanitary-Civil Engineering Services

Weston & Sampson has performed sanitary-civil consulting engineering services on more than 1,500 projects for municipal, state, federal, and private utility and industrial clients.

1970s

1976
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The company is incorporated as Weston & Sampson Engineers, Inc.

1980s

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Expansion of Weston & Sampson

Weston & Sampson expanded with the addition of the Solid Waste, Hazardous Waste, and Information Technology programs. Company headquarters were relocated to Peabody, Massachusetts to provide more room for this growth.

1990s

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Addition of Services Repair, Maintenance, and O&M

Weston & Sampson broadened its services with the addition of Weston & Sampson Services Repair, Maintenance, and O&M. The company also launched practices in Geotechnical Engineering, Environmental Compliance & Training, and Environmental Science & Permitting.

2000s

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New capabilities in Transportation, Bridge Design, Landscape Architecture, CMR – Construction, and WWE – Equipment Sales

Weston & Sampson added capabilities in Transportation, Bridge Design, Landscape Architecture, CMR – Construction, and WWE – Equipment Sales. The company continued to expand its geographic footprint with Transportation, Bridge Design, & Survey in its new Rocky Hill, Connecticut office.

2010s

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Weston & Sampson grew rapidly and opened multiple new locations, including Albany, NY; Boston & Worcester MA; Charleston & Columbia, SC; Manchester, NH; and CMR opened a shop in Avon, MA.

Corporate headquarters were moved to Reading, Massachusetts. Weston & Sampson expanded services in Aquatics and acquired MAEC. The number of employees grew to more than 500 and revenue exceeded $100 million. The ESOP was established to support future ownership transition, and all entities were rebranded to Weston & Sampson.

2020s

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Weston & Sampson grew with the acquisition of Atlantic Aquatic Engineering, Rhinebeck Architecture, Denis L Maher Co., Dragin Geothermal, and Brooker Engineering.

The first 198 people became fully vested in our ESOP program. Our IDEA initiative was introduced, and the company transitioned to become 100% employee-owned.

Ready to transform your environment?
Let’s work together.

Contact Weston & Sampson