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Apex Companies, LLC

Unclaimed
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.

Overview

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.

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What we offer

Water Management Solutions

Comprehensive Water Management Solutions Supporting Regulatory Compliance.

apexcos.com/what-we-do/water/

Environmental Management Solutions

Comprehensive environmental solutions to manage risk and ensure compliance.

apexcos.com/what-we-do/environmental/

Health & Safety Solutions

Ensure a safe work environment with tailored health and safety solutions.

apexcos.com/what-we-do/health-safety/

Compliance & Assurance Solutions

Apex delivers expert compliance and assurance solutions to manage risks and achieve sustainability goals.

apexcos.com/what-we-do/compliance-assurance/

Infrastructure Solutions

Comprehensive infrastructure solutions enhancing project efficiency and compliance.

apexcos.com/what-we-do/infrastructure/

ARTEMIS®

Streamline Environmental Data Management and Compliance.

apexcos.com/what-we-do/artemis/

Expert Witness & Litigation Support

Service

Expert Insights and Reliable Support for Legal Cases.

apexcos.com/what-we-do/expert-witness-litigation-support/

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/

Market segments

Market size by segment

Growth potential (CAGR)

Environmental remediation and site assessment

112.34 Billion USD7.1% CAGR

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

24.6 Billion USD7% CAGR

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

29.81 Billion USD10.4% CAGR

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

43.2 Billion USD6.4% CAGR

Development of ESG programs, governance, reporting and independent assurance of sustainability disclosures and related compliance.

Occupational safety, health and regulatory compliance

5.11 Billion USD6.3% CAGR

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.

More information about our offering

Water Management Solutions

End-to-end water resources services including stormwater program management, drinking water testing, wastewater management, and regulatory permitting. These services are designed to ensure compliance and effective management of both stormwater and wastewater systems.

  • Ensure Safe Drinking Water
    Routine testing of drinking water ensures it meets safety standards, protecting public health and maintaining compliance.
  • Achieve Regulatory Compliance
    Expert stormwater program management guarantees adherence to regulatory standards, protecting communities and environments.
  • Protect Community Health
    Effective management of wastewater systems ensures safe treatment processes and adherence to health standards.
  • Facilitate Regulatory Compliance
    Securing NPDES permits is critical for legal compliance in stormwater management and pollutant discharge.
  • Facilitate Stormwater Compliance
    Thoroughly prepared SWPPP documents ensure stormwater discharges comply with regulations, safeguarding water quality.
  • Ensure Effective Stormwater Management
    Regular maintenance of basins guarantees they function optimally, capturing stormwater effectively and reducing flooding risks.
  • Restore Infrastructure Efficiency
    Timely corrective measures are essential for maintaining the integrity and functionality of stormwater management systems.
  • Restore Ecosystem Function
    Efforts to rehabilitate ponds enhance their ability to manage stormwater effectively and support local ecosystems.
  • Ensure Spill Prevention Compliance
    Compliance with SPCC requirements ensures effective management of potential spills, minimizing environmental risks.

Environmental Management Solutions

Environmental services including due diligence, site assessments, remediation, regulatory permitting, wetlands delineation, and data management to manage environmental risk. These services ensure compliance and effective management of environmental concerns.

  • Effectively Manage Contaminated Sites
    Implement thorough strategies to assess and remediate contaminated sites, ensuring compliance and safety.
  • Identify and Assess Environmental Conditions
    Conduct Phase I and II ESAs to thoroughly identify environmental hazards and inform strategic decisions.
  • Conduct Comprehensive ESAs
    Identify potential environmental liabilities and ensure compliance with property condition evaluations.
  • Assess and Mitigate Environmental Risks
    Identify potential environmental risks and create effective treatment plans to minimize impacts.
  • Remediate Soil and Groundwater
    Address and clean up soil and groundwater contaminants to restore environmental integrity.
  • Design and Maintain Remediation Systems
    Develop effective remediation systems tailored to site-specific requirements, ensuring long-term effectiveness.
  • Establish Spill Prevention Measures
    Create comprehensive plans to prevent spills and effectively respond to incidents to minimize environmental impact.
  • Delineate and Permit Wetlands
    Expertly delineate wetlands to ensure compliance with environmental regulations and secure necessary permits.
  • Support Environmental Decisions with GIS
    Employ advanced GIS tools to analyze and visualize environmental data for better decision-making.
  • Manage UST/AST Lifecycle
    Ensure compliance and safety through expert management of tank systems from design to removal.
  • Evaluate Vapor Intrusion Risks
    Identify vapor intrusion pathways and implement mitigation strategies to protect public health.
  • Perform Forensic Environmental Studies
    Utilize forensic methods to investigate environmental incidents and support legal proceedings.

Health & Safety Solutions

Comprehensive health and safety services including industrial hygiene, safety culture, workplace safety programs, ergonomics, and PPE evaluation to promote a safer workplace.

  • Reduces Workplace Risks
    Tailored programs designed to address and mitigate specific occupational hazards, enhancing overall workplace safety.
  • Mitigates Environmental Risks
    Identifies and evaluates hazardous materials to ensure safe handling and compliance with environmental regulations.
  • Promotes Safe Chemical Use
    Comprehensive planning to ensure safe handling and use of chemicals in the workplace, aimed at preventing exposure and compliance with regulations.
  • Identifies Workplace Hazards
    Quantifies exposure levels and identifies potential risks to workers, ensuring health and safety measures are in place.
  • Improves Workplace Safety
    Deploys customized solutions to enhance safety practices, ensuring compliance and reducing risk of injury.
  • Facilitates Safe Re-occupation
    Ensures that all safety protocols are met before occupants return to a building post-event.
  • Ensures Proper Protection
    Systematic evaluation of personal protective equipment to confirm it meets safety standards and fits correctly for optimal protection.
  • Fosters a Safe Work Environment
    Develops an organizational culture that prioritizes safety, thereby reducing accidents and fostering compliance.
  • Enhances Worker Comfort
    Improves productivity and reduces work-related injuries through tailored ergonomic solutions.

Compliance & Assurance Solutions

Regulatory compliance and assurance services including permitting, environmental, ESG, and governance support to help organizations meet legal requirements and enhance their sustainability efforts.

  • Conduct Comprehensive EHS Audits
    Regular audits ensure compliance with environmental, health, and safety regulations, reducing risks and enhancing operational efficiency.
  • Achieve Sustainability Goals
    Apex helps organizations develop effective sustainability strategies, enhancing their environmental and governance practices.
  • Ensure Compliance With Air Regulations
    Apex provides thorough air quality management services, ensuring adherence to federal, state, and local air quality regulations to minimize environmental impact.
  • Streamline Permitting Processes
    Our team guides clients through complex permitting processes to achieve timely approvals and compliance.
  • Access Expert Witness Services
    We offer expert witness services in environmental litigation, ensuring robust support for legal matters.
  • Optimize Management Systems
    Apex offers expertise in designing and refining management systems tailored to meet regulatory and organizational standards.

Infrastructure Solutions

Infrastructure planning and engineering services supporting project delivery across road, water, and civil projects aimed at effective project execution and compliance.

  • Enhance Project Viability
    Provides essential expertise in design, analysis, and project management for sustainable infrastructure.
  • Ensure Project Timelines
    Utilizes proven management techniques to oversee all aspects of construction, ensuring adherence to timelines and budgets.
  • Maximize Asset Lifespan
    Focuses on optimizing performance and value throughout the lifecycle of infrastructure assets.
  • Enhance Traffic Flow
    Develops solutions that prioritize safety and efficiency in urban and rural transport systems.
  • Mitigate Ground Risks
    Evaluates subsurface conditions to inform construction and design, preventing future issues.
  • Ensure Accurate Planning
    Delivers precise data for planning and execution of construction projects, ensuring compliance with regulations and standards.

ARTEMIS®

ARTEMIS® helps you capture, visualize, and manage your environmental and ESG data to support compliant, reliable, and efficient business practices. The platform supports decision-making with real-time data accessible from any device.

  • Enhance Decision Making
    Gain insights from current data to make informed decisions quickly and accurately.
  • Facilitate Remote Operations
    Enable team collaboration and data management from any location, whether in the office or on-site.
  • Ensure Compliance
    Streamline compliance with regulatory requirements, helping to avoid potential fines and penalties.

Expert Witness & Litigation Support

Expert witness and litigation support services across regulatory and legal matters, providing expertise in environmental, health, and safety laws to support your case effectively.

  • Provide Expert Testimony
    Our experts offer reliable testimony that strengthens your case in legal matters.
  • Reduce Litigation Costs
    Comprehensive litigation support services to bolster your legal position.
  • Identify Liability Allocation
    Providing thorough analysis to clarify responsibilities in legal matters.
  • Facilitate Environmental Mediation
    Assisting in navigating complex disputes through mediation, leading to resolution while minimizing litigation costs.
  • Evaluate Indoor Air Quality
    Detailed assessments of indoor air quality to address health concerns and compliance.

Sustainability & ESG Solutions

Sustainability assurance and ESG data verification services including greenhouse gas data, life cycle assessment, and airport carbon accreditation to support your sustainability objectives.

  • Verify GHG and ESG Data
    Obtain comprehensive verification that aligns with global frameworks, enhancing your credibility in sustainability reporting.
  • Achieve Airport Carbon Accreditation
    Ensure compliance with sustainability standards through robust accreditation processes.
  • Tailor Sustainability Solutions
    Developing tailored solutions that meet unique sustainability challenges and regulatory requirements.
  • Assure Product-Level Sustainability
    Verifying product claims supported by data promotes transparency and trust in sustainability initiatives.

References

Methodology and sourcing behind the market figures shown above.

Environmental remediation and site assessment

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.

Water and wastewater engineering

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%).

Environmental data management and compliance reporting

The specified segment aligns with Environmental Management Systems (EMS) / environmental data management platforms. FutureMarketInsights (EMS) reports a 2026 market size of USD 29.81 billion and a 10.4% CAGR (2026–2036), which best matches the segment scope (software + services for environmental/EHS/ESG data and reporting). Other search results show narrower estimates for compliance software alone (~USD 3.8–3.94 billion in 2025) and broader compliance-data markets (USD 15.01 billion in 2024); these were used to validate scope and range but the EMS figure was chosen as the primary estimate for this market segment.

Sustainability and ESG reporting and assurance

Search results show varying scopes: assurance-only markets are small (USD 1–5B range), reporting & consultancy mid-sized (~USD 8.1B), and advisory (broader ESG programme, governance, reporting and assurance support) is substantially larger. Fact.MR explicitly reports an ESG & sustainability advisory market base value of USD 43.2 billion (2025) with a 6.4% CAGR (2026–2036). Given the input segment includes programme development, governance, reporting and independent assurance (advisory-heavy scope), the Fact.MR advisory estimate was used as the representative market size and CAGR. Verdantix, Credence Research and market reports for assurance-only services provide context on smaller subsegments and higher growth rates for assurance-specific spend.

Occupational safety, health and regulatory compliance

Primary basis: recent market reports for occupational health/services (which align with compliance, training, and health‑related resources) place the market around USD 5.1–5.2B (2024–2025) with mid-single-digit CAGR. Broader "workplace safety" studies (including IoT/wearables and safety technology) report a larger market (~USD 16.12B in 2024) and higher CAGR; software-only estimates show lower mid-single-digit CAGR. Given the segment’s focus on compliance, training, health and code guidance (services and content rather than hardware), the estimate uses the occupational health/services figures as the primary reference.

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