Registry · NAICS Index · Sector 54

541620 — Environmental Consulting Services

NAICS 541620 is 'Environmental Consulting Services', a 2022 U.S. national industry under Sector 54 (Professional, Scientific, and Technical Services); the SBA small-business size standard is $19,000,000 (defined under 13 CFR § 121.201).

Description

This industry comprises establishments primarily engaged in providing advice and assistance to businesses and other organizations on environmental issues, such as the control of environmental contamination from pollutants, toxic substances, and hazardous materials. These establishments identify problems (e.g., inspect buildings for hazardous materials), measure and evaluate risks, and recommend solutions. They employ a multidisciplined staff of scientists, engineers, and other technicians with expertise in areas, such as air and water quality, asbestos contamination, remediation, ecological restoration, and environmental law. Establishments providing sanitation or site remediation consulting services are included in this industry (as defined in the official U.S. Census Bureau 2022 NAICS Manual).

Exclusions & Cross-References

  • Establishments primarily engaged in environmental remediation are classified in Industry 562910,
  • Remediation Services;
  • Establishments primarily engaged in providing environmental engineering services are classified in
  • Industry 541330, Engineering Services;
  • Establishments primarily engaged in providing environmental testing services are classified in Industry
  • 541380, Testing Laboratories and Services;
  • Establishments primarily engaged in promoting the preservation and protection of the environment are
  • classified in U.S. Industry 813312, Environment, Conservation and Wildlife Organizations;
  • Establishments primarily engaged in individual activities as part of an ecological restoration project are
  • classified according to the primary activity; and
  • Government establishments primarily engaged in administering, overseeing, and managing governmental
  • ecological restoration programs are classified in Industry 924110, Administration of Air and Water

Overview Facts

NAICS Structure: 541620 National Industry
Sector (2)
54
Professional, Scientific, and Technical Services
Subsector (3)
541
Professional, Scientific, and Technical Services
Industry Group (4)
5416
Management, Scientific, and Technical Consulting Services
Industry (5)
54162
Environmental Consulting Services
National Industry (6)
541620
Environmental Consulting Services

Legacy SIC Concordance

Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.

  • SIC 8999 - Services, NEC (via SIC1987:8999→NAICS1997:54162→2002:541620→2007:541620→2012:541620→2017:541620→2022:541620)

Suggested Product Service Codes (Advisory)

The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.

  • PSC AH22 — NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; CONSERVATION AND LAND MANAGEMENT; APPLIED RESEARCH

Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)

Frequently Asked Questions (FAQ)

Is NAICS code 541620 valid in 2022? ▾

Yes, 541620 is a valid 6-digit 2022 NAICS national industry code representing 'Environmental Consulting Services' under Sector 54 in the official classification index.

What is the SBA size standard for NAICS code 541620? ▾

The Small Business Administration (SBA) has established a small business size standard of $19,000,000 for NAICS code 541620 (Environmental Consulting Services), calculated based on receipts.

What is the legacy SIC equivalent for NAICS 541620? ▾

According to official Census Bureau concordance tables, NAICS code 541620 (Environmental Consulting Services) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 8999 - Services, NEC.

Related Pages & Tools

Further regulatory reference links for NAICS code 541620: