Apex Companies

What Apex Companies does

Apex Companies, LLC is a privately held, national water resources and environmental services firm founded in 1988 and headquartered in Rockville, Maryland. The company delivers multidisciplinary consulting, engineering, and field services in water, environmental, infrastructure, health & safety, and regulatory compliance, and it supports clients through a proprietary cloud-based platform called ARTEMIS® (Apex Real Time Environmental Management Information System) that captures environmental and ESG data, manages compliance calendars, and provides real-time dashboards and mobile field data collection. Apex serves public-sector clients (departments of transportation, municipalities, water management districts, federal agencies) and private-sector customers across energy, real estate and financial services, industrial/manufacturing, e-commerce/retail, education, aerospace, healthcare, food and beverage, mineral resources, and transportation and logistics, with documented enterprise deployments covering 600+ DOT stormwater facilities, 750+ convenience retail stores, and 800+ telecom locations on ARTEMIS.

The company makes money through professional-services fees on a project and recurring-contract basis, supplemented by accredited health & safety training classes (AHERA asbestos, lead, HAZWOPER) priced between $135 and $1,450 per participant. Apex operates an enterprise field-sales model with direct client engagement and a website-driven capabilities inquiry channel, and it delivers services through more than 80 office locations across all 50 U.S. states. Growth has been driven primarily by an active acquisition strategy — Environmental Partners (2021), Water Science Associates (2023), SWIMS, Weiler Engineering, Johnson Engineering, and PBS Engineering and Environmental (2024), Forsgren Associates (2025-11), AquaWorks DBO (2025-12), Tully (2026-02), and CWE (2026-03) — with acquired firms retained as branded subsidiaries under the Apex umbrella. The firm is ranked #13 in ENR's All-Environmental list and #68 in the ENR Top 200, was named a 2026 Zweig Hot Firm, and is backed by Tailwind Capital (2019) and Yukon Partners (2018).

Name

Apex Companies

Legal name

Apex Companies, LLC

Website

https://apexcos.com

Company type

Private

Founded year

1988

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Apex Companies is a privately held national water resources and environmental services firm founded in 1988, delivering consulting, engineering, and compliance services to public agencies and enterprises across all 50 U.S. states through 80+ offices, the ARTEMIS® data platform, and a portfolio of acquired regional brands.

Ownership category

akta.pro rank

Product category

Environmental and Engineering Consulting Services

NAICS

Environmental Consulting Services (54162), Other Scientific and Technical Consulting Services (54169), Management Consulting Services (54161)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Instrumentation, Controls & Automation Engineering Consulting (BPAHAIAM)

Keywords

• Environmental consulting
• Water resources engineering
• Stormwater management
• Infrastructure engineering
• Health and safety services

Headquarters

HQ city

Rockville

HQ country

United States

HQ region

North America

Offices84 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Engineering and Consulting Services: Apex provides multidisciplinary consulting and engineering services including water, environmental, infrastructure, health & safety, and compliance services to public agencies and private sector clients on a project basis.
2. Health & Safety Training: Apex offers accredited training classes for asbestos, lead, and HAZWOPER certifications. Courses are held online, in-person in Portland Oregon, and throughout the Northwest. Pricing ranges from $135 to $1,450 per course.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels7 records

Core offering

Apex Companies is a national multidisciplinary consulting and engineering firm delivering water, environmental, infrastructure, health & safety, and compliance services to public agencies and private sector clients. It operates a network of 80+ offices across all 50 U.S. states and pairs its engineering services with the proprietary ARTEMIS® cloud-based environmental information management platform. Revenue is generated primarily through project-based professional services contracts, supplemented by accredited health & safety training classes delivered online and in-person.

Product overview

Apex Companies is a national multidisciplinary consulting and engineering services firm established in 1988, offering an integrated platform of services through its core product divisions and multiple acquired subsidiaries. The core offerings include ARTEMIS® (a cloud-based environmental information management system), Water Services, Environmental Services, Health & Safety Services, Infrastructure Services, Compliance & Assurance, and Health & Safety Training. The company operates a portfolio of acquired brands including CWE (civil infrastructure and water resources engineering), Tully Consulting Group (stormwater management), AquaWorks DBO (small-scale water and wastewater treatment), Forsgren (civil engineering in the Intermountain West), SWIMS (stormwater inspection and maintenance), Weiler Engineering (Florida civil/structural engineering), Johnson Engineering (Southwest Florida civil engineering), PBS Engineering and Environmental (Pacific Northwest environmental services), Water Science Associates (Florida hydrogeology), and Environmental Partners (New England engineering). These subsidiaries operate under the Apex umbrella while maintaining their existing brand identities, enabling Apex to provide end-to-end solutions across water, environmental, infrastructure, health and safety, and compliance services nationwide.

Differentiator

Problem solved

Functional benefit

Brands

• ARTEMIS®: Apex Real Time Environmental Management Information System - a configurable cloud-based environmental and ESG data management platform for regulatory compliance and business optimization.

Products and services

• ARTEMIS® (Apex Real Time Environmental Management Information System) Configurable cloud-based information management system that captures and manages environmental and ESG data for regulatory compliance, business metrics, and operational efficiency; features mobile field data collection, compliance calendar, real-time dashboards, and automatic notifications.
• Water Services Comprehensive water management solutions covering stormwater management, wastewater management, water supply, water resources, and planning/design resiliency, including PFAS treatment design and groundwater quality evaluation.
• Environmental Services Full suite of environmental solutions including due diligence and assessment, natural resources management, emergency response, and remediation services for contaminated sites.
• Health & Safety Services Occupational health and safety services including industrial hygiene monitoring, workplace safety programs, ergonomics assessments, and process safety management; the founding service line of the company in 1988.
• Infrastructure Services Multidisciplinary engineering and consulting services including civil engineering, infrastructure asset management, traffic and transportation, construction management, geotechnical engineering, landfill and waste engineering, construction materials testing, surveying and mapping, structural engineering, land use planning, landscape architecture, and public involvement.
• Compliance & Assurance Environmental, sustainability, health, safety, and regulatory compliance solutions that enable clients to identify and manage risk, develop corrective actions, and minimize EHS risk; includes permitting, air compliance, management systems, ESG reporting, EHS audits, and technical expert witness services.
• Health & Safety Training Accredited AHERA, OSHA, EPA, and HAZWOPER training and certification classes including asbestos, lead, and hazardous materials training delivered online and in-person; pricing ranges from $135 to $1,450 per participant.

Quantifiable outcome

• Managing stormwater facilities for over 600 Department of Transportation sites
• +3 more outcomes

Named customers11 records

Segments11 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Ten partnerships are on record, tiered core.

• CWEcoreOthers · 18 March 2026Apex Companies acquired CWE, a civil infrastructure, water resources, and environmental engineering firm established in 2006 operating across California. The acquisition strengthens Apex's stormwater infrastructure capabilities in California and positions the company as a leading end-to-end stormwater infrastructure provider.
• Tully, Inc. (Tully Consulting Group)coreOthers · 17 February 2026Apex Companies acquired Tully, Inc., a Northern California-based stormwater management and civil engineering firm founded in 2005. The acquisition enhances Apex's stormwater lifecycle service capabilities in California, particularly for transportation and large civil infrastructure projects. Tully will continue operating as Tully Consulting Group, an Apex Company.
• AquaWorks DBO, Inc.coreOthers · 16 December 2025Apex Companies acquired AquaWorks DBO, Inc., a civil and environmental engineering firm specializing in small-scale water and wastewater treatment systems. The deal expands Apex's capabilities in decentralized water treatment and expands AquaWorks' modular wastewater solutions nationwide.
• Forsgren AssociatescoreOthers · 2 November 2025Apex Companies acquired Forsgren Associates, a civil engineering and environmental consulting firm in the Intermountain West. Forsgren operates across nine states with over 150 staff and 60+ years of experience in water, transportation, and civil engineering. The merger enhances Apex's service offerings and geographic presence in the Intermountain West and Pacific Northwest.
• Storm Water Inspection and Maintenance Services, Inc. (SWIMS)coreOthers · 1 January 2024Apex acquired SWIMS in 2024, a pioneer in stormwater management industry founded in 1998. SWIMS provides stormwater inspection, maintenance, and innovative StormTek™ full trash capture technology across California and North America.
• Weiler EngineeringcoreOthers · 1 January 2024Apex acquired Weiler Engineering in 2024, a firm providing full-service civil and structural engineering services for over 30 years to clients throughout Southwest Florida and the Florida Keys.
• Johnson EngineeringcoreOthers · 1 January 2024Apex acquired Johnson Engineering in 2024, one of the oldest and most prominent civil engineering firms in Southwest Florida with more than 130 team members including professional engineers, surveyors, ecologists, scientists, and geologists.
• PBS Engineering and EnvironmentalcoreOthers · 1 January 2024Apex acquired Pacific Northwest-based PBS Engineering and Environmental in 2024, a regional leader in environmental consulting, engineering services, health & safety, and surveying with eight offices across Oregon and Washington and nearly 300 employees.
• Water Science AssociatescoreOthers · 1 January 2023Apex acquired Florida-based Water Science Associates in 2023, specializing in hydrogeology, integrated surface and groundwater systems, water supply and disposal well systems, and water resource management.
• Environmental Partners (EP)coreOthers · 2 August 2021Apex acquired Boston-based Environmental Partners in 2021, a regional engineering services firm serving New England with capabilities in water, wastewater, stormwater, civil, transportation, and environmental markets. EP operates as a subsidiary with headquarters in Quincy, Massachusetts.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Stantec: Stantec is a North American engineering, architecture, and environmental consulting firm with comparable water, environmental, and infrastructure service lines to Apex.
• Environmental Resources Management (ERM): ERM is a global pure-play environmental and sustainability consultancy that competes with Apex's environmental services and EHS compliance offerings across enterprise clients.
• Tetra Tech: Tetra Tech is a leading global consulting and engineering firm focused on water, environment, and sustainable infrastructure—directly comparable to Apex's core service mix and target clients.
• Brown and Caldwell: Brown and Caldwell is a specialized environmental engineering and water-focused consulting firm that closely mirrors Apex's water resources, stormwater, and environmental compliance capabilities.
• SLR Consulting: SLR is a global environmental and engineering consultancy with comparable environmental impact assessment, remediation, and compliance capabilities to Apex.

Broad incumbents

• AECOM: AECOM is a global infrastructure consulting firm with significant environmental and water services practices, competing with Apex across federal, state, and enterprise engagements but at vastly larger scale.
• Arcadis: Arcadis is a global design and consultancy firm with strong water and environmental practices, competing with Apex for enterprise and public-sector environmental consulting work.
• Jacobs Solutions: Jacobs is a major global engineering services firm with a sizable environmental and water practice; it competes with Apex on large government infrastructure and environmental remediation contracts.
• WSP: WSP is a global professional services consultancy with major US environmental and water engineering practices that overlap directly with Apex's core offerings.

Emerging players

• NV5 Global: NV5 is a fast-growing technical engineering and consulting firm pursuing a similar acquisition-driven growth model in environmental, infrastructure, and geospatial services.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@apexcos
• Facebookfacebook.com/apexcompaniesllc
• LinkedInlinkedin.com/company/apex-companies-llc
• Xx.com/apexcos

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries10 records

Funding overview

Funding rounds2 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A6 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Apex Companies