2017 NAICS Definition

T = Canadian, Mexican, and United States industries are comparable.

221320 Sewage Treatment Facilities

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

Cross-References. Establishments primarily engaged in--

• 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 562991, Septic Tank and Related Services; and
• Cleaning and rodding sewers and catch basins--are classified in U.S. Industry 562998, All Other Miscellaneous Waste Management Services.

2007 NAICS		2012 NAICS		2017 NAICS		Corresponding Index Entries
221320		221320		221320		Collection, treatment, and disposal of waste through a sewer system
221320		221320		221320		Sewage disposal plants
221320		221320		221320		Sewage treatment plants or facilities
221320		221320		221320		Sewer systems
221320		221320		221320		Waste collection, treatment, and disposal through a sewer system