Industry code 37 · Oslo

Sewerage in Oslo

There are 26 active companies in sewerage in Oslo. 1 of them were registered in the last 12 months. Together they have 100 registered employees. The largest company is Norva24 Gravco AS with 42 employees. The oldest, Midt-Gålåflaten Avløpslag, was founded in 2004. 38% are limited companies.

Active companies: 26
New in the last 12 months: 1
Registered employees: 100
Share of limited companies: 38 %

The largest companies in sewerage in Oslo

Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.

#	Company	Org. no.	Employees	Revenue	Founded
1	Norva24 Gravco AS	998586259	42	NOK 98.3 m	2012
2	Arnkværn Miljø Og Renovasjon Oslo AS	912400573	41	NOK 97.4 m	2013
3	Wastewater AS	924921978	11	NOK 14 m	2020
4	Vann Og Avløpssenteret AS	996708918	6	NOK 11.9 m	2011
5	Vann Og Avløpsgruppen AS	827841552	–	–	2021
6	Andelslaget Va-Nordneset	887023212	–	–	2004
7	Tjønnåsveien Vann- Og Kloakkanlegg SA	891901852	–	–	2007
8	Syningen Avløpslag SA	913951093	–	–	2014
9	Trabelifjellet Vann- Og Avløpslag SA	914736501	–	–	2014
10	Hfl AS	915935230	–	–	2015
11	Siljeholmen Vann Og Avløp SA	920391265	–	–	2018
12	Liveien Vann Og Avløp SA	921093810	–	–	2018
13	Rørfornying Norge AS	923309632	–	NOK 3.4 m	2019
14	Kjempeholmen Vann Og Avløp Driftsforetak SA	926374583	–	–	2021
15	Holmsbrekkodden Renseanlegg SA	927438860	–	–	2025
16	Spylexperten AS	927810506	–	NOK 15.1 m	2021
17	Fjellsvardevegen Renseanlegg	928334759	–	–	2021
18	Hummelvika Vann Og Avløpslag - Prosjekt SA	937219342	–	–	2026
19	Midt-Gålåflaten Avløpslag	986978240	–	–	2004
20	Borteid Vann- Og Avløpslag	989897373	–	–	2006
21	Fotenbukta Vann- Og Avløp AS	989988557	–	NOK 357.4k	2006
22	Langslåa Vann Og Avløp	991730648	–	–	2007
23	Holmesund Vann- Og Kloakklag	992403888	–	–	2008
24	Øvre Åsebu Vannlag SA	997270541	–	–	2011
25	Skudvika Renseanlegg AS	998837499	–	NOK 149.5k	2012

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Newest companies in sewerage in Oslo

Hummelvika Vann Og Avløpslag - Prosjekt SA6 Mar 2026
Holmsbrekkodden Renseanlegg SA5 Nov 2025
Fjellsvardevegen Renseanlegg14 Dec 2021
Spylexperten AS14 Oct 2021
Vann Og Avløpsgruppen AS29 Sept 2021
Kjempeholmen Vann Og Avløp Driftsforetak SA9 Mar 2021
Wastewater AS15 Apr 2020
Rørfornying Norge AS31 Aug 2019
Liveien Vann Og Avløp SA1 Oct 2018
Siljeholmen Vann Og Avløp SA6 Feb 2018

Frequently asked questions

How many companies in sewerage are there in Oslo?

The Register of Legal Entities lists 26 active companies in sewerage in Oslo. 1 of them were registered in the last 12 months.

Which is the largest company in sewerage in Oslo?

Norva24 Gravco AS is the largest by number of employees, with 42 employees. The organisation number is 998586259.

How many people work in sewerage in Oslo?

The companies have 100 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 4 of the 25 largest companies have reported employees.

How long have there been companies in sewerage in Oslo?

The oldest active company, Midt-Gålåflaten Avløpslag, was founded in 2004. 38% of the companies are limited companies.

Explore further

Sub-industries in Oslo

37.0 Sewerage

Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 37. Figures are updated continuously.