NAICS Code 221320 Description

This industry comprises establishments primarily engaged in operating sewer systems or sewage treatment facilities that collect, treat, and dispose of waste.

More Details

NAICS Code 221320 - Sewage Treatment Facilities is a final level code of the “Utilities” Sector. There are 379 companies verified as active in this industry in the USA with an estimated employment of 7,050 people.

Industry Sector


Total Companies


Verified Companies


Est. Employment


Annual Payroll


Total Revenue


SBA Size Standard

Annual Revenue Limit of $22,000,000

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Hierarchy Navigation for NAICS Code 221320

Parent Category (less specific)

Extended NAICS Codes (8-digit) for Sewage Treatment Facilities

Industry Examples of NAICS 221320

Common types of examples within NAICS Code 221320 - Sewage Treatment Facilities are:

  • Collection, treatment, and disposal of waste through a sewer system
  • Sewage disposal plants
  • Sewage treatment plants or facilities
  • Sewer systems
  • Waste collection, treatment, and disposal through a sewer system

Industry Image

Example photo for industry NAICS 221320 - Sewage Treatment Facilities . This image represents an activity or product found in this industry.


For some business types, there may be a similar industry to NAICS Code 221320 - Sewage Treatment Facilities that is a better classification match. Establishments primarily engaged in:

Companies compiles comprehensive business data and executive contact leads for businesses within NAICS Code 221320 - Sewage Treatment Facilities . Some of the leading and most notable companies are listed below. To order a list of companies within NAICS Code 221320 - Sewage Treatment Facilities for marketing (postal mailing, telemarketing, emailing) or analytics-use, click on the link below to “Buy Business List”. Our data analysts are standing by to assist in your list setup and target marketing.

Industry Executives

Would you like to email executives in NAICS Code 221320 - Sewage Treatment Facilities ? Below are some of the common job titles available to be targeted.

  • Business Development
  • Chairman
  • C-Level
  • Director
  • Engineering
  • Executive Director
  • Facilities
  • Finance
  • Human Resource
  • IT
  • Manager
  • Marketing
  • Manufacturing
  • Operations
  • Owner
  • Partner
  • President
  • Principal
  • Purchasing
  • Sales
  • Vice President

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Questions & Answers

  • What is the SBA NAICS 221320 revenue limit?

    Businesses with an annual revenue under $22,000,000 are considered small businesses by SBA.

  • How many active businesses operate in NAICS Code 221320?

    There are 379 verified business locations operating primarily in this industry.

  • What was the total revenue for NAICS Code 221320?

    In 2017 the total revenue for Sewage Treatment Facilities was $1,761,563,000

  • What was the annual payroll for NAICS Code 221320?

    In 2017 the annual payroll for Sewage Treatment Facilities was $368,509,000

  • How many people work in NAICS Code 221320?

    The number of reported paid employees is 7,050.