North American Industry Classification System (NAICS) code 221320 is used by federal buyers for market research, set-aside size standards, and reporting. Official titles come from the Census Bureau NAICS structure.
Official definition
This industry comprises establishments primarily engaged in operating sewer systems or sewage treatment facilities that collect, treat, and dispose of waste.
- Official title
- Sewage Treatment Facilities
- Code level
- 6
- Parent industry
- Sewage Treatment Facilities 22132
- Open opportunities
- 6 open · 21 active
SBA small-business size standard
$35M average annual receipts
Average annual receipts basis
Check this standard and its exceptionsExcluded or separately classified activities
Official Census cross-references identify activities that belong under another North American Industry Classification System (NAICS) code.
Cleaning and rodding sewers and catch basins--are classified in U.S. Industry 562998, All Other Miscellaneous Waste Management Services.
Operating waste treatment or disposal facilities (except sewer systems or sewage treatment facilities)--are classified in Industry 56221, Waste Treatment and Disposal;
Operating water treatment plants and/or operating water supply systems--are classified in Industry 221310, Water Supply and Irrigation Systems;
Pumping (i.e., cleaning) cesspools, portable toilets, and septic tanks or renting portable toilets--are classified in U.S. Industry 562991, Septic Tank and Related Services; and
Source and edition
2022 NAICS Manual definition and reference material from the U.S. Census Bureau.