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apexcos.comRockville, MD, United States
A national, award-winning consulting and engineering firm delivering innovative, science-based solutions in water, environmental, infrastructure, and health & safety services.
Apex Companies, LLC is a national, award-winning consulting and engineering firm delivering innovative, science-based solutions in water, environmental, infrastructure, and health & safety services. The firm works with public and private-sector clients to address complex challenges across water resources, environmental remediation, infrastructure planning and delivery, and safety programs. With a multidisciplinary team of engineers, scientists, and program managers, Apex provides integrated capabilities, rigorous analysis, and practical guidance to improve operations, manage risk, and support sustainable growth. The organization emphasizes community involvement, sustainability, and responsible business practices as part of its core approach.
Mission statement
To deliver innovative, science-based solutions through engineering and consulting that improve water, environmental, infrastructure, and health & safety outcomes for clients nationwide.
Products & Services
Water Management Solutions Solution
Comprehensive Water Management Solutions Supporting Regulatory Compliance.
apexcos.com/what-we-do/water- ✓ Drinking Water Testing — Ensure Safe Drinking Water
- ✓ Stormwater Program Management — Achieve Regulatory Compliance
- ✓ Wastewater Management — Protect Community Health
- ✓ NPDES Permitting — Facilitate Regulatory Compliance
- ✓ SWPPP Preparation — Facilitate Stormwater Compliance
- ✓ Basin Maintenance — Ensure Effective Stormwater Management
- ✓ Corrective Action and Repairs — Restore Infrastructure Efficiency
- ✓ Pond Rehabilitation — Restore Ecosystem Function
- ✓ SPCC Permitting and Inspections — Ensure Spill Prevention Compliance
Environmental Management Solutions Solution
Comprehensive environmental solutions to manage risk and ensure compliance.
apexcos.com/what-we-do/environmental- ✓ Contaminated Site Management — Effectively Manage Contaminated Sites
- ✓ Environmental Site Assessments — Identify and Assess Environmental Conditions
- ✓ Phase I/II ESAs and Property Condition Assessments — Conduct Comprehensive ESAs
- ✓ Risk Assessment and Treatment — Assess and Mitigate Environmental Risks
- ✓ Soil and Groundwater Cleanup — Remediate Soil and Groundwater
- ✓ Remediation System Design, Installation, and O&M — Design and Maintain Remediation Systems
- ✓ Spill Prevention and Response — Establish Spill Prevention Measures
- ✓ Wetlands Delineation and Permitting — Delineate and Permit Wetlands
- ✓ Geographic Information Systems and Data Management — Support Environmental Decisions with GIS
- ✓ UST/AST Design, Removal, Installation — Manage UST/AST Lifecycle
- ✓ Vapor Intrusion Assessment — Evaluate Vapor Intrusion Risks
- ✓ Forensic Studies — Perform Forensic Environmental Studies
Health & Safety Solutions Solution
Ensure a safe work environment with tailored health and safety solutions.
apexcos.com/what-we-do/health-safety- ✓ Occupational Hazards Mitigation Program Development — Reduces Workplace Risks
- ✓ Hazardous Materials Assessments — Mitigates Environmental Risks
- ✓ Chemical Hygiene Plans — Promotes Safe Chemical Use
- ✓ Industrial Hygiene Exposure Assessments — Identifies Workplace Hazards
- ✓ Workplace Safety Solutions — Improves Workplace Safety
- ✓ Building Re-occupancy Clearance Sampling — Facilitates Safe Re-occupation
- ✓ PPE Evaluation Including FIT Testing — Ensures Proper Protection
- ✓ Safety Culture and Behavioral Approaches — Fosters a Safe Work Environment
- ✓ Ergonomic Assessments and Program Development — Enhances Worker Comfort
Compliance & Assurance Solutions Solution
Apex delivers expert compliance and assurance solutions to manage risks and achieve sustainability goals.
apexcos.com/what-we-do/compliance-assurance- ✓ EHS Audits & Compliance — Conduct Comprehensive EHS Audits
- ✓ Sustainability & ESG — Achieve Sustainability Goals
- ✓ Air Compliance & Permitting — Ensure Compliance With Air Regulations
- ✓ Permitting, Planning & Licensing — Streamline Permitting Processes
- ✓ Technical Expert Witness Support — Access Expert Witness Services
- ✓ Management Systems — Optimize Management Systems
Infrastructure Solutions Solution
Comprehensive infrastructure solutions enhancing project efficiency and compliance.
apexcos.com/what-we-do/infrastructure- ✓ Civil Engineering — Enhance Project Viability
- ✓ Construction Management — Ensure Project Timelines
- ✓ Infrastructure Asset Management — Maximize Asset Lifespan
- ✓ Traffic & Transportation — Enhance Traffic Flow
- ✓ Geotechnical Engineering — Mitigate Ground Risks
- ✓ Surveying & Mapping — Ensure Accurate Planning
ARTEMIS® Platform
Streamline Environmental Data Management and Compliance.
apexcos.com/what-we-do/artemis- ✓ Real-Time Data Management — Enhance Decision Making
- ✓ 24/7 Accessibility — Facilitate Remote Operations
- ✓ Risk Mitigation — Ensure Compliance
Expert Witness & Litigation Support Service
Expert Insights and Reliable Support for Legal Cases.
apexcos.com/what-we-do/expert-witness-litigation-support- ✓ Expert Testimony — Provide Expert Testimony
- ✓ Litigation Support — Reduce Litigation Costs
- ✓ Quantifying Liability — Identify Liability Allocation
- ✓ Environmental Mediation Participation — Facilitate Environmental Mediation
- ✓ Independent Air Quality Evaluations — Evaluate Indoor Air Quality
Sustainability & ESG Solutions Service
Achieve your sustainability goals with expert assurance and data verification services.
apexcos.com/what-we-do/compliance-assurance/sustainability-and-esg- ✓ GHG and ESG Data Verification — Verify GHG and ESG Data
- ✓ Airport Carbon Accreditation — Achieve Airport Carbon Accreditation
- ✓ Sustainability Assurance Solutions — Tailor Sustainability Solutions
- ✓ Product Lifecycle Assessment (LCA) Assurance — Assure Product-Level Sustainability
Market Segments
Environmental remediation and site assessment
Services that identify, characterize, and remediate contaminated properties, including Phase I/II ESAs, remediation system design and O&M, vapor intrusion assessment, and risk-based cleanup to manage liability and enable redevelopment.
Water and wastewater engineering
Planning and design of water supply, wastewater, hydraulic infrastructure and floodplain management to ensure regulatory compliance and community resilience.
Environmental data management and compliance reporting
Platforms and services for capturing, visualizing, and managing environmental, EHS, and ESG data to support regulatory compliance, reporting, and operational decision-making.
Sustainability and ESG reporting and assurance
Development of ESG programs, governance, reporting and independent assurance of sustainability disclosures and related compliance.
Occupational safety, health and regulatory compliance
Resources supporting OSHA compliance, safety program development, toolbox talks, health and wellness, safety recognition, and code‑level guidance (including firestopping) to reduce risk and meet regulatory requirements.
Related Organizations
Multidisciplinary planning and engineering firm delivering planning, design, and construction services for public and private sector projects.
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Common Questions
- What does Apex Companies, LLC do?
- Apex Companies, LLC is a national, award-winning consulting and engineering firm delivering innovative, science-based solutions in water, environmental, infrastructure, and health & safety services. The firm works with public and private-sector clients to address complex challenges across water resources, environmental remediation, infrastructure planning and delivery, and safety programs. With a multidisciplinary team of engineers, scientists, and program managers, Apex provides integrated capabilities, rigorous analysis, and practical guidance to improve operations, manage risk, and support sustainable growth. The organization emphasizes community involvement, sustainability, and responsible business practices as part of its core approach.
- What is Apex Companies, LLC's role in the Environmental remediation and site assessment market?
- Services that identify, characterize, and remediate contaminated properties, including Phase I/II ESAs, remediation system design and O&M, vapor intrusion assessment, and risk-based cleanup to manage liability and enable redevelopment.
- What is Apex Companies, LLC's role in the Water and wastewater engineering market?
- Planning and design of water supply, wastewater, hydraulic infrastructure and floodplain management to ensure regulatory compliance and community resilience.
- How was the Environmental remediation and site assessment market size estimate for Apex Companies, LLC calculated?
- Estimated global market size uses published environmental remediation market figures (KingsResearch: USD 112.34B in 2023). Multiple industry reports project mid-single-digit to high-single-digit CAGRs (Allied/PR citing ~7.1%; KingsResearch 7.57%), so growth potential for remediation and site-assessment services is assessed at roughly 7% CAGR. Niche segments (e.g., PFAS remediation) are much smaller (≈USD 1.98B in 2025) and will grow separately.
- How was the Water and wastewater engineering market size estimate for Apex Companies, LLC calculated?
- Estimate derived from service-focused market data in the supplied results. MarketsandMarkets reports a global wastewater treatment services market (USD 62.65B in 2024; 6.87% CAGR). Broader treatment market totals (Fortune, BCC) show larger industry scale; Roland Berger highlights mid-single-digit to low-double-digit CAGRs across service and smart-water segments. Applying a conservative 10% share of the global services market to represent the planning & design (engineering) subsegment yields ~USD 24.6B and an expected CAGR near the services-market range (~7%).
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