Industry Description
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--
Business Examples
Common types of business activities within NAICS 221320 - Sewage Treatment Facilities are:
- Sewer systems
- Sewage disposal plants
- Sewage treatment plants or facilities
- Waste collection, treatment, and disposal through a sewer system
- Collection, treatment, and disposal of waste through a sewer system
IBISWorld Industry Research Report
Sewage Treatment Facilities in the US (22132)
Revenue 2025
$32.3bn
Growth 2025
1.68%
Key Trends
Private entry has spurred acquisition activity
Facilities must apply to local public utility commissions for rate increases to cover additional costs
Consumers earning higher incomes and businesses expanding will create more waste as consumption rises
Products and Services
Similar Industries
For some business types, there may be a similar industry to 221320 - Sewage Treatment Facilities that is a better classification match. Establishments primarily engaged in:
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NAICS Cross Reference
Operating waste treatment or disposal facilities (except sewer systems or sewage treatment facilities)--are classified in Industry 56221, Waste Treatment and Disposal;
IBISWorld industry research report
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NAICS Cross Reference
Pumping (i.e., cleaning) septic tanks and cesspools--are classified in U.S. Industry 562991, Septic Tank and Related Services; and
IBISWorld industry research report
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NAICS Cross Reference
Cleaning and rodding sewers and catch basins--are classified in U.S. Industry 562998, All Other Miscellaneous Waste Management Services.
IBISWorld industry research report
NAICS Hierarchy 221320 - Sewage Treatment Facilities
NAICS Code 221320 - Sewage Treatment Facilities sits in the 2-digit Sewage Treatment Facilities sector. NAICS codes can be 2- to 6-digits and the further along the hierarchy, the more detailed and specific the category will be. Learn more about the structure of NAICS codes
2 Digits: 22
Sector Title: Utilities
3 Digits 4 Digits 5 Digits 6 Digits
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2211 Electric Power Generation, Transmission and Distribution
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22111 Electric Power Generation
- 221111 Hydroelectric Power Generation
- 221112 Fossil Fuel Electric Power Generation
- 221113 Nuclear Electric Power Generation
- 221114 Solar Electric Power Generation
- 221115 Wind Electric Power Generation
- 221116 Geothermal Electric Power Generation
- 221117 Biomass Electric Power Generation
- 221118 Other Electric Power Generation
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22112 Electric Power Transmission, Control, and Distribution
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2212 Natural Gas Distribution
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22121 Natural Gas Distribution
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2213 Water, Sewage and Other Systems
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22131 Water Supply and Irrigation Systems
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22132 Sewage Treatment Facilities
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22133 Steam and Air-Conditioning Supply
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NAICS Resources
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