NAICS Code Description



221320 - Sewage Treatment Facilities

Top Businesses by Annual Sales for 221320 – Click for Complete Profiles:

DC Water and Sewer AuthorityMetro Wstwater Reclamation Dst
Metroplitan St Louis Sewer DstJersey Cy Mncpl Utilities Auth
Hampton Roads Sanitation DstRenewable Water Resources
Louisville/Jefferson Co SewerVeolia Wtr N Amrca-Central LLC
Water Solutions Holdings LLCAlderwood Wtr & Waste Wtr Dst

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.
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Index Entries for 221320
221320221320221320Collection, treatment, and disposal of waste through a sewer system
221320221320221320Sewage disposal plants
221320221320221320Sewage treatment plants or facilities
221320221320221320Sewer systems
221320221320221320Waste collection, treatment, and disposal through a sewer system