North American Industry Classification System 2022International Standard Industrial Classification of All Economic Activities, Rev.4
NAICS 2022 221320 to ISIC Rev 4
Crosswalk mapping from NAICS 2022 221320 "Sewage Treatment Facilities" to ISIC Rev 4. 1 official equivalence.
NAICS 2022 221320 in ISIC Rev 4
Each entry is an official equivalence edge. Click to see the full ISIC Rev 4 definition, hierarchy, and its own crosswalks.
Reverse direction: ISIC Rev 4 to NAICS 2022
About NAICS 2022 221320
221320 Sewage Treatment FacilitiesThis 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--