Public engineering firm directory

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Allen Engineering and Science

Jackson, MS

Allen Engineering and Science is an environmental, civil, and structural engineering practice serving private and public clients across the southeastern United States. Founded in 1993 as Eco-Systems and renamed in 2013, the company combines engineering, environmental science, planning, and construction management for oil and gas, manufacturing, energy, chemical, solid waste, real estate, and public-sector programs.

WebsitePhone6 offices5 leadersFounded 1993Updated Jun 2026

Service detail: Engineering

Service: EngineeringService: Civil EngineeringService: Environmental EngineeringIndustry: Oil & GasIndustry: ManufacturingType: Civil Engineering+26 more

Ambiotec Civil Engineering Group, Inc.

Brownsville, TX

Civil engineering & environmental group

WebsitePhone2 offices7 projects6 leadersFounded 1986Size Estimate: 11-50 employees

Project: Robindale WWTP Rehabilitation and Expansion

Service: Land DevelopmentService: Feasibility studies & site assessmentsService: Master planning and concept plansIndustry: Land DevelopmentIndustry: GovernmentType: Civil Engineering+46 more

Castellon Consulting LLC

Azle, TX

Drainage studies, floodplain analysis, and H&H modeling for land developers, engineers, and property owners

WebsitePhone1 office2 leaders1 credentialsUpdated Jun 2026

Service detail: Water Resources Engineering

Service: Water Resources EngineeringService: Hydrologic & Hydraulic (H&H) ModelingService: Downstream Impact AssessmentsIndustry: Water ResourcesIndustry: Stormwater & Flood ControlType: Civil Engineering+27 more

Civil & Environmental Consultants, Inc.

Pittsburgh, PA

We Own It.

WebsitePhone14 offices9 leaders2 credentialsFounded 1989Size Estimate: 1,500 employees

Service detail: Civil Engineering

Service: Air QualityService: Civil EngineeringService: One Of Cec's Four Founding PracticesIndustry: ManufacturingIndustry: MiningType: Civil Engineering+31 more

Cliff Nudi Engineering PLLC

New York, NY

Smart, Sustainable, and Value-Added Engineering Services

Website2 offices1 leadersSize Estimate: 1-24 employeesUpdated Jun 2026

Service detail: Mechanical, Electrical, & Plumbing (MEP) Services

Service: Mechanical, Electrical, & Plumbing (MEP) ServicesService: HVAC Systems DesignService: Electrical, Power Distribution, and Lighting Systems DesignIndustry: ResidentialIndustry: CommercialType: Mechanical Engineering+38 more

EnSafe Inc.

Memphis, TN

Creative Thinking. Custom Solutions.

WebsitePhone20 offices4 projects15 leaders4 credentialsFounded 1980

Project: Remediation of Perchlorate Contamination at NWIRP McGregor

Service: Environmental Site Assessment & InvestigationService: Phase I/II Environmental Site AssessmentsService: Soil and Groundwater InvestigationsIndustry: Environmental & RemediationIndustry: FederalType: Environmental Engineering+47 more

Enprotec / Hibbs & Todd, Inc. (eHT)

Abilene, TX

Civil, Environmental and Geotechnical Engineers Serving Texas Since 1989.

Website3 offices5 projectsFounded 1989Size Estimate: 10-50 employeesUpdated Jun 2026

Project: Upper Leon River MWD Water Treatment Plant

Service: Water Resources & TreatmentService: Water Supply Planning & DevelopmentService: Water Transmission / DistributionIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+28 more

FXSA

El Paso, TX

Dedicated to Our Clients Since 1979

WebsitePhone1 office2 credentialsFounded 1979Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Water Supply And Distribution SystemsService: Sanitary Sewer SystemsIndustry: InfrastructureIndustry: TransportationType: Civil Engineering+21 more

Freeman-Millican, Inc.

Dallas, TX

Planning the Future Together

WebsitePhone1 office3 projects6 leadersFounded 1987Size Estimate: 10-49 employees

Project: Barnes Bridge Pump Station Structure

Service: Water & Wastewater EngineeringService: Pump stations and lift stationsService: Wastewater treatment plant designIndustry: GovernmentIndustry: Water SupplyType: Civil Engineering+30 more

Garcia & Wright Consulting Engineers, Inc.

San Antonio, TX

Designing for the Future of Our Communities

WebsitePhone2 offices10 projects1 leaders2 credentialsFounded 1975

Project: Texas A&M Easterwood Airport

Service: Civil EngineeringService: Water Resource PlanningService: Hydraulic & Water System ModelingIndustry: GovernmentIndustry: Oil & GasType: Civil Engineering+60 more

KPA Engineers

Temple, TX

Expert engineering that's on your side

WebsitePhone2 offices10 projects12 leaders15 credentialsFounded 1983

Project: Lake Halbert Water Treatment Plant Improvements

Service: Transportation EngineeringService: Thoroughfare PlansService: Streets and HighwaysIndustry: GovernmentIndustry: TransportationType: Civil Engineering+75 more

KSA Engineers Inc

Longview, TX

Dedicated to making life better in communities

WebsitePhone17 offices7 projects3 leaders5 credentialsFounded 1978

Project: Sabine River Water Treatment Facility

Service: Water and Wastewater EngineeringService: Water Treatment Plant DesignService: Wastewater Treatment Plant DesignIndustry: AviationIndustry: AirportsType: Architecture & Engineering+43 more

Kenall, Inc.

Houston, TX

Engineering to a Better World

WebsitePhone2 offices4 projects6 leaders8 credentialsFounded 2002

Project: San Joaquin River Restoration Program

Service: Civil and Structural EngineeringService: Civil DesignService: Structural Engineering and DesignIndustry: FederalIndustry: GovernmentType: Architecture & Engineering+40 more

Kennedy/Jenks Consultants, Inc.

San Francisco, CA

Tailored Solutions for Transmission and Conveyance Projects

Website34 offices13 projects2 leaders9 credentialsUpdated Jun 2026

Project: EchoWater Project Site Preparation

Service: Air QualityService: MACT compliance review and plan developmentService: BACT reviewIndustry: WastewaterIndustry: Water SupplyType: Civil Engineering+38 more

NL Engineering Water

Harlingen, TX

Our Mission Is Simple: We Engineer Water

WebsitePhone1 office4 projects2 leaders17 credentials1 publications

Project: G. Tim Lawrence Brackish Desalination Plant

Service: Brackish Groundwater DesalinationService: Reverse Osmosis System DesignService: Microfiltration System DesignIndustry: Water SupplyIndustry: WastewaterType: Water / Wastewater Engineering+24 more

Parkhill

Lubbock, TX

Providing inventive architecture and engineering solutions for a better future

WebsitePhone4 officesUpdated Jun 2026

Service detail: Architecture and Planning

Service: Architecture and PlanningService: Architectural DesignService: Master PlanningIndustry: EducationIndustry: Water SupplyType: Architecture & Engineering+30 more

RESPEC Company LLC

Rapid City, SD

Practical Outcomes From Complex Challenges

WebsitePhone19 offices3 leadersUpdated Jun 2026

Service detail: Infrastructure Resiliency and Modernization

Service: Infrastructure Resiliency and ModernizationService: Transportation NetworksService: Water SystemsIndustry: MiningIndustry: TransportationType: Civil Engineering+43 more

RMA Engineering, LLC

Concordia, KS

Engineering services virtually everywhere

WebsitePhone3 offices6 leadersFounded 2008Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Municipal Streets and County RoadsService: Bridge Design and MaintenanceIndustry: InfrastructureIndustry: Electric UtilitiesType: Civil Engineering+26 more

SAMES, Inc.

McAllen, TX

Construction. Engineering & Surveying

WebsitePhone4 offices5 projects3 leaders7 credentialsFounded 2008

Project: McAllen International Airport Terminal Restroom Renovations

Service: Civil EngineeringService: Utility DesignService: Roadway and Parking Lot DesignIndustry: GovernmentIndustry: FederalType: Civil Engineering+35 more

STAR Geoenvironmental, LLC

Katy, TX

Your trusted partner in building a sustainable tomorrow

WebsitePhone1 office5 projects7 credentialsSize Estimate: 1-25 employeesUpdated Jun 2026

Project: USACE Louisville District: ARIMD'S Property Disposal Program

Service: Environmental and Radiological ServicesService: Environmental Site Assessments (Phase I and Phase II)Service: NEPA Reviews and Environmental PlanningIndustry: FederalIndustry: GovernmentType: Environmental Engineering+27 more

T. Baker Smith, LLC

Houma, LA

Empowering people. Enriching communities.

WebsitePhone10 offices10 projectsFounded 1913Size Estimate: 200-400 employeesUpdated Jun 2026

Project: US 190: LA 437 to US 190 Bus (Phase 1)

Service: EngineeringService: PlanningService: Civil & Structural EngineeringIndustry: Oil & GasIndustry: IndustrialType: Civil Engineering+41 more

Trilogy Engineering Services LLC

Houston, TX

It's About Our Clients!

WebsitePhone2 offices2 leaders4 credentialsFounded 2015Updated Jun 2026

Service detail: Drinking Water Design

Service: Drinking Water DesignService: Supply WellService: Distribution WaterlineIndustry: Water SupplyIndustry: WastewaterType: Water / Wastewater Engineering+44 more

WaterEngineers, Inc.

Cypress, TX

Water & Wastewater Treatment Consultants - Engineering & Design

WebsitePhone1 office1 leadersFounded 1994Size Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Private Water and Wastewater Systems

Service: Private Water and Wastewater SystemsService: Commercial Water Well Design and PermittingService: Public Water System Design and TCEQ ApprovalIndustry: WastewaterIndustry: Water SupplyType: Water / Wastewater Engineering+28 more