- Environmental Concern, Inc.
Nonprofit, non-advocacy corporation specializing in wetlands delineation, mitigation, and construction services.
- Schnabel Engineering Associates
Provides specialty geotechnical, environmental, construction monitoring, and water resources consulting services.
- Stone Environmental Inc.
Helps consultants and companies characterize hazardous waste sites. Environmental services include site investigation, waterloo profiling, applied geographic information systems (GIS), wastewater management, and agrochemical studies.
- Kleinschmidt Associates
Provides hydroelectric, structural and civil/site engineering, water resource, environmental, and hydromechanical services.
- Commonwealth Engineering and Technology, Inc.
Specializing in water and wastewater engineering and also providing GIS / GPS services, as well as stormwater management, wetlands delineation, and watershed studies.
- Water Resource Associates (WRA)
Civil and environmental engineering firm, with an emphasis on engineering, water resource management, planning, and environmental science.
- Lake and Pond Solutions Co.
Full service lake and pond management company, specializing in aeration, fountains, weed and algae control, as well as environmentally friendly products.
- Athena Technologies, Inc.
A geological sampling firm that provides vibracore capabilities for all aquatic and wetland environments, for geotechnical and environmental purposes.
- Limnos Oy
Specialises in sampling equipment for water and sediment studies.
- Ponds UK
Offers ponds and lakes construction as well as fisheries construction, management, and consultancy services. Based in Colchester, Essex in U.K.
- Water Harvesting Solutions, Inc.
Offers rainwater and greywater harvesting systems for commercial properties in the U.S. and Canada.