CNAE section E: water and waste codes in English.
14 CNAE 2.3 subclasses in section E (Water supply, sewerage, waste management and remediation), with the English label, the ISIC Rev.4 class and the number of active Brazilian companies using each as their main activity: 20,970 in all.
The most used codes in this section are collection of non-hazardous waste (3811-4/00, 7,461); recovery of plastic materials (3832-7/00, 2,634); sewerage-related activities, except network management (3702-9/00, 1,958). To see these companies by state, size and division, open Water and waste companies in Brazil.
36 · Water collection, treatment and supply
| CNAE | Activity (English) | Portuguese (official) | ISIC | Companies |
|---|---|---|---|---|
3600-6/01 | Water collection, treatment and distribution | Captação, tratamento e distribuição de água | 3600 | 1,534 |
3600-6/02 | Water distribution by truck | Distribuição de água por caminhões | 3600 | 1,022 |
Division 36: Water collection, treatment and supply. Companies = active head offices with this main CNAE.
37 · Sewerage and related activities
| CNAE | Activity (English) | Portuguese (official) | ISIC | Companies |
|---|---|---|---|---|
3701-1/00 | Sewerage network management | Gestão de redes de esgoto | 3700 | 366 |
3702-9/00 | Sewerage-related activities, except network management | Atividades relacionadas a esgoto, exceto a gestão de redes | 3700 | 1,958 |
Division 37: Sewerage and related activities. Companies = active head offices with this main CNAE.
38 · Waste collection, treatment and disposal; materials recovery
| CNAE | Activity (English) | Portuguese (official) | ISIC | Companies |
|---|---|---|---|---|
3811-4/00 | Collection of non-hazardous waste | Coleta de resíduos não-perigosos | 3811 | 7,461 |
3812-2/00 | Collection of hazardous waste | Coleta de resíduos perigosos | 3812 | 709 |
3821-1/00 | Treatment and disposal of non-hazardous waste | Tratamento e disposição de resíduos não-perigosos | 3821 | 814 |
3822-0/00 | Treatment and disposal of hazardous waste | Tratamento e disposição de resíduos perigosos | 3822 | 260 |
3831-9/01 | Recovery of aluminium scrap | Recuperação de sucatas de alumínio | 3830 | 884 |
3831-9/99 | Recovery of metal materials, except aluminium | Recuperação de materiais metálicos, exceto alumínio | 3830 | 1,025 |
3832-7/00 | Recovery of plastic materials | Recuperação de materiais plásticos | 3830 | 2,634 |
3839-4/01 | Composting plants | Usinas de compostagem | 3830 | 341 |
3839-4/99 | Recovery of materials n.e.c. | Recuperação de materiais não especificados anteriormente | 3830 | 1,767 |
Division 38: Waste collection, treatment and disposal; materials recovery. Companies = active head offices with this main CNAE.
39 · Remediation and other waste management services
| CNAE | Activity (English) | Portuguese (official) | ISIC | Companies |
|---|---|---|---|---|
3900-5/00 | Remediation and other waste management services | Descontaminação e outros serviços de gestão de resíduos | 3900 | 195 |
Division 39: Remediation and other waste management services. Companies = active head offices with this main CNAE.
Classification: IBGE/CONCLA (CNAE 2.3, CNAE-ISIC correspondence). English labels: LatSouth. Counts: Receita Federal release 2026-10-10, individual entrepreneurs excluded. Full crosswalk CSV.
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