NAICS Code 221320

NAICS 221320

NAICS Code 221320 – Sewage Treatment Facilities

Definition of NAICS Code 221320: This industry comprises establishments primarily engaged in operating sewer systems or sewage treatment facilities that collect, treat, and dispose of waste.

  • You can also download your own copy of the complete 2017 NAICS Classification Manual. The NAICS Manual is updated every five years. The 2017 copy will be applicable until a new edition is produced in 2022.

Cross Reference Guide for Code 221320

What codes are similar to this classification that might be a more applicable code? The cross-reference guide below displays the codes for other similar industries. Please review to find the most applicable classification.

  • Operating waste treatment or disposal facilities (except sewer systems or sewage treatment facilities)–are classified in Industry 56221, Waste Treatment and Disposal;
  • Pumping (i.e., cleaning) septic tanks and cesspools–are classified in U.S. Industry NAICS 562991, Septic Tank and Related Services; and
  • Cleaning and rodding sewers and catch basins–are classified in U.S. Industry NAICS 562998, All Other Miscellaneous Waste Management Services.

Other Index Entries for NAICS 221320

The North American Industry Classification System contains multiple index entries that are each descriptive of the same code. The bulleted list below shows all applicable index entries (Current and former) that are associated with this classification. These index entries further elaborate on the scope of applicable industries that have already been defined at the top of this page.

  • 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

Insurance Conversion Table for NAICS Code 221320

Looking for an insurance classification other than the North American Industry Classification System? If a company falls within the industry defined on this page, then the class codes mentioned below may be applicable. Please note that the bulleted cross-reference guide below is not authoritative. Users should have an insurance professional review to ensure proper insurance classification.

  • NCCI WC (Varies by state): 7580NAICS 221320
  • CA WC: 7580
  • DE WC: 753
  • PA WC: 753
  • MI WC: 7580
  • NJ WC: 7580
  • NY WC: 7580
  • WY WC: 221320
  • GL: 48039, 98810
  • SIC: 4952

Resources: Praxiom, AceGroupTDICalifornia Division of Workers Compensation, Delaware Workers Compensation Manual, Pennsylvania Workers Compensation Manual, Michigan Workers’ Compensation Placement Facility: Classification Definitions, New Jersey Workers Compensation and Employers Liability Insurance Manual, New York Workers Compensation and Employers Liability, North American Industry Classification System, Florida Underwriting Guide: Commercial General Liability Classifications,  Standard Industrial Classifications.

The suggested cross reference guide for NAICS code 221320 is based on our research using the resources cited above.

Correlating Code Breakdown for North American Industry Classification System

NAICS codes are broken down by digit. The broadest description starts with the 2 digit sector codes. The 3 digit subsector codes are more specific, then the 4 digit industry group, 5 digit industry, and the most specific is the 6 digit NAICS code (Where you are now). If the code on this page does not describe the industry of the business in question, then select the largest applicable code below. From there, follow through the progression of smaller digits to the larger digits in order to obtain the most specific 6 digit classification.

Other helpful NAICS Downloads

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NAICS Code 221320