Public engineering firm directory

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A D Marble Co Inc

King of Prussia, PA

Environmental, Cultural, and Water Resources Engineering

Website4 offices5 leadersUpdated Jun 2026

Service detail: Environmental Engineering

Service: Environmental EngineeringService: Environmental Clearance and PermittingService: Construction Site Environmental ServicesIndustry: FederalIndustry: Power GenerationType: Environmental Engineering+14 more

A. Morton Thomas and Associates, Inc.

Rockville, MD

Celebrating 70 Years of Engineering and Design

WebsitePhone1 office4 projects5 credentialsFounded 1955Size Estimate: 500-999 employees

Project: Route 1 Improvements

Service: Site and Civil EngineeringService: Site DevelopmentService: Civil DesignIndustry: TransportationIndustry: Highways & RoadsType: Civil Engineering+43 more

AB Consultants, Inc.

Lanham, MD

Multidisciplinary engineering and support services in the Baltimore-Washington area

WebsitePhone2 offices1 projects1 credentialsFounded 1993Updated Jun 2026

Project: WMATA Bus System Renovations

Service: Land PlanningService: Zoning StudiesService: Land Use Feasibility StudiesIndustry: GovernmentIndustry: TransportationType: Civil Engineering+82 more

ARRO Consulting, Inc.

Lititz, PA

Your trusted partner for municipal engineering.

WebsitePhone13 offices8 projects4 leadersFounded 1946Size Estimate: 100-300 employees

Project: Upper Uwchlan Township Municipal Authority Administrator

Service: Civil & MunicipalService: Appointed Engineer representationService: Roadway and Infrastructure RehabilitationIndustry: GovernmentIndustry: UtilitiesType: Civil Engineering+50 more

AULtec, Inc.

Gaithersburg, MD

Professional Civil Engineering and Land Surveying Services

Website1 office5 projects2 leaders7 credentialsFounded 1994Size Estimate: 10-49 employees

Project: Pre-stressed Concrete Slab Bridge No. 10172 Replacement

Service: Civil EngineeringService: Site & Land DevelopmentService: Hydrology & Stormwater ManagementIndustry: GovernmentIndustry: Land DevelopmentType: Civil Engineering+19 more

Accura Engineering and Consulting Services, Inc.

Atlanta, GA

Providing comprehensive engineering, construction, and construction management services.

WebsitePhone3 offices8 leadersFounded 2003Size Estimate: 120 employeesUpdated Jun 2026

Service detail: Federal Services

Service: Federal ServicesService: Defense Program SupportService: Civilian Agency SupportIndustry: FederalIndustry: DefenseType: Civil Engineering+30 more

Adams Environmental Engineering Group, LLC

Pasadena, MD

Adams Environmental Engineering Group (AEEG) is a full-service environmental engineering and contracting firm based in the Mid-Atlantic region, providing consulting, design, remediation, and site assessment services for commercial, industrial, and residential clients. AEEG holds Professional Engineering licenses in Maryland, the District of Columbia, Virginia, and 11 additional states, bringing more than 20 years of experience to environmental projects throughout the region.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Environmental Site Assessments

Service: Environmental Site AssessmentsService: Phase I environmental site assessmentsService: Phase II environmental site assessmentsIndustry: Environmental & RemediationIndustry: CommercialType: Environmental Engineering+34 more

Anchor QEA

Seattle, WA

Transforming Our Environment and Communities, with Integrity and Vibe

WebsitePhone28 offices4 projects4 leadersSize Estimate: 200-1,000 employeesUpdated Jun 2026

Project: Hancock County Marsh Living Shoreline

Service: EngineeringService: Civil EngineeringService: Coastal ResilienceIndustry: Power GenerationIndustry: FederalType: Civil Engineering+46 more

Apex Companies Llc Or

Rockville, MD

Shaping a safe, sustainable, and equitable future.

Website1 office1 credentialsFounded 1988Updated Jun 2026

Service detail: Health and Safety

Service: EnvironmentalService: Health and SafetyService: Health and Safety TrainingIndustry: AerospaceIndustry: AviationType: Environmental Engineering+43 more

Arthur Engineering Services, LLC

Laurel, MD

Arthur Engineering Services (AES) is a Laurel, Maryland-based practice specializing in condition assessment of water and sewer infrastructure. AES performs closed-circuit television inspections, sewer system evaluation studies, infiltration and inflow investigations, flow monitoring, hydrant and valve testing, and GIS/GPS asset surveys for municipal clients. Its field teams hold NASSCO PACP/MACP/LACP certifications and deliver large-scale cleaning and inspection contracts for DC Water, the City of Baltimore, and WSSC across hundreds of thousands of linear feet of sanitary sewer and stormwater infrastructure.

WebsitePhone1 office4 projects7 credentialsFounded 2016Updated Jun 2026

Project: DC Water Sewer System Evaluation Study (SSES) - Phase I Nicholson Street Area

Service: Sewer and Water System InspectionService: Closed Circuit Television (CCTV) InspectionsService: Lateral InspectionsIndustry: Water SupplyIndustry: WastewaterType: Water / Wastewater Engineering+18 more

Bluestone Environmental Group, Inc.

Malvern, PA

Environmental Engineering & Consulting Services

WebsitePhone5 offices8 projects1 leaders2 credentialsFounded 2010

Project: Former Nebraska Ordnance Plant - Remedial Optimization and Pilot Study

Service: Remediation SolutionsService: CERCLA and RCRA InvestigationsService: Human Health and Ecological Risk AssessmentsIndustry: Environmental & RemediationIndustry: DefenseType: Environmental Engineering+18 more

Brudis & Associates, Inc.

Columbia, MD

Innovative, high quality, and responsive engineering solutions

WebsitePhone4 offices8 projects4 leaders6 credentialsFounded 1992

Project: MD 180 / MD 351 Highway Improvements

Service: Highway & PlanningService: Roadway Geometrics, Widening, Reconstruction & ImprovementsService: Streetscape DesignIndustry: GovernmentIndustry: FederalType: Civil Engineering+70 more

Building Dynamics Llc

Savage, MD

Intelligent Solutions for the Life of the Building

Website1 officeFounded 1996Updated Jun 2026

Service detail: Building Systems Engineering

Service: Indoor Air QualityService: Building RestorationService: Building Systems EngineeringIndustry: Arts & CultureIndustry: CommercialType: Automation & Controls+10 more

C.C. Johnson & Malhotra, P.C.

Baltimore, MD

Provide the Highest Level of Service to Our Clients While Delivering Value

WebsitePhone6 offices16 projects8 leadersFounded 1979Size Estimate: 50-100 employees

Project: 540 West Madison

Service: Buildings and FacilitiesService: HVAC Systems DesignService: Electrical Power and LightingIndustry: CommercialIndustry: RetailType: Civil Engineering+58 more

CGC Geoservices, LLC

Newark, DE

Geotechnical drilling and engineering, led by engineers who know what engineers need.

WebsitePhone3 offices2 leaders13 credentialsFounded 2008Updated Jun 2026

Service detail: Geotechnical Drilling and Sampling

Service: Geotechnical Drilling and SamplingService: Rock CoringService: Roadway BoringsIndustry: TransportationIndustry: Environmental & RemediationType: Environmental Engineering+19 more

COA Barrett, LLC

Prince Frederick, MD

Land development design, civil engineering, surveying, and environmental planning in Maryland.

Website1 officeUpdated Jun 2026

Service detail: Land Planning

Service: Land PlanningService: Commercial Site PlansService: Residential Subdivision DesignIndustry: Land DevelopmentIndustry: ResidentialType: Civil Engineering+22 more

CPH

Orlando, FL

Building Community. Delivering Results.

WebsitePhone4 offices2 projects6 leaders6 credentialsFounded 1981

Project: Aventura Mall

Service: ArchitectureService: Interior ArchitectureService: Site Engineering (Civil)Industry: CommercialIndustry: RetailType: Architecture & Engineering+34 more

Carlexson Consulting LLC

Pasadena, MD

Resilient solutions for the waters we call home.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Program Management

Service: Program ManagementService: Coastal Restoration and EngineeringService: Living Shoreline DesignIndustry: Environmental & RemediationIndustry: Water ResourcesType: Coastal Engineering+12 more

Celadon Technologies, LLC

Rockville, MD

Solutions for Water, Wastewater, and Energy Efficiency

WebsitePhone1 officeUpdated Jun 2026

Service detail: Water Infrastructure Engineering

Service: Water Infrastructure EngineeringService: Small & Large Diameter Distribution MainsService: Transmission Main DesignIndustry: Water SupplyIndustry: WastewaterType: Water / Wastewater Engineering+31 more

Charles P. Johnson & Associates, Inc.

Silver Spring, MD

Crafting a Shared Vision of Success

Website1 officeFounded 1971Updated Jun 2026

Service detail: Planning and Land Development

Service: Planning and Land DevelopmentService: Site Selection AnalysisService: Feasibility ReportsIndustry: Land DevelopmentIndustry: ResidentialType: Civil Engineering+51 more

DMY Engineering Consultants Inc.

Chantilly, VA

Reliable. Innovative.

WebsitePhone3 offices10 projects1 credentialsFounded 2009Updated Jun 2026

Project: Dulles Corridor Silver Line Metrorail Project Phase II

Service: Geotechnical EngineeringService: In-House Geotechnical Drilling and TestingService: Foundation Analysis and DesignIndustry: TransportationIndustry: WastewaterType: Geotechnical Engineering+23 more

Daft McCune Walker, Inc.

Towson, MD

Designing. Developing. Delivering.

WebsitePhone2 offices11 projects2 credentialsSize Estimate: 50-150 employeesUpdated Jun 2026

Project: Honeygo Elementary School

Service: Civil EngineeringService: Site EngineeringService: Stormwater EngineeringIndustry: CommercialIndustry: EducationType: Civil Engineering+53 more

Dynamic Engineering Consultants, PC

Lake Como, NJ

Civil Engineering Consultants with Experience

WebsitePhone14 officesSize Estimate: 360 employeesUpdated Jun 2026

Service detail: Site Civil Engineering

Service: Site Civil EngineeringService: Permitting and EntitlementsService: Stormwater ManagementIndustry: Land DevelopmentIndustry: CommercialType: Civil Engineering+15 more

EA Engineering, Science, and Technology, Inc., PBC

Hunt Valley, MD

Collaborative analysis thoughtfully applied.

WebsitePhone1 office1 leaders1 credentials2 publicationsUpdated Jun 2026

Service detail: Chemicals and Contaminants of Emerging Concern

Service: Chemicals and Contaminants of Emerging ConcernService: PFOS and PFOA ManagementService: Climate ChangeIndustry: GovernmentIndustry: Environmental & RemediationType: Environmental Engineering+26 more