UK SIC 2007 code in Section E: Water supply; sewerage, waste management and remediation activities
36000 Water collection, treatment and supply
SIC 36000 is the UK code for water collection, treatment and supply. Companies House accepts it when you register a company or file a confirmation statement.
- Code
- 36000 (UK SIC 2007, Companies House list)
- Section
- Section E: Water supply; sewerage, waste management and remediation activities
- Division
- 36 Water collection, treatment and supply
- SIC 2026
- 36.00 Water collection, treatment and supply (1:1)
- Closest US NAICS
- 221310
Activities ONS lists under 36000
The ONS index assigns these 11 activities to this code. If one describes your company, this is the code to use.
- Collection of rain water
- Collection of water from rivers, lakes, wells
- Desalting of sea or ground water to produce water
- Distribution of water through mains, by trucks or other means
- Operation of irrigation canals
- Sea water desalination
- Treatment of water for industrial and other purposes
- Water authority (headquarters and water supply)
- Water collection, purification and distribution
- Water company
- Water conservation
Source: ONS UK SIC 2007 alphabetical index.
What changes in SIC 2026
ONS published UK SIC 2026 in 2026. Its correspondence table maps this code's class (36.00) to:
| SIC 2026 code | Heading | Link type |
|---|---|---|
| 36.00 | Water collection, treatment and supply | 1:1 |
"1:1" means the class carries over unchanged in scope; other link types mean it was split or merged. Companies House still uses SIC 2007, so keep filing with 36000 until it announces a switch.
Closest US NAICS codes
Matched through the shared international class (ISIC Rev. 4). Treat these as a starting point and read the definition before using one.
Data last changed November 14, 2026. Source: Companies House condensed SIC list. How this page is built.