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 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.

No change 1997 to 2002

2002 NAICS to 1987 SIC

1997Economic Census

Bridge Between 1997 NAICS and SIC

2002 NAICS	1997 NAICS	1987 SIC	Corresponding Index Entries
221320	221320	4952	Collection, treatment, and disposal of waste through a sewer system
221320	221320	4952	Sewage disposal plants
221320	221320	4952	Sewage treatment plants or facilities
221320	221320	4952	Sewer systems
221320	221320	4952	Waste collection, treatment, and disposal through a sewer system

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