Company lists · Data refreshed September 2026

Top 25 Industrial water treatment system builders based in Norway

Name: Industrial water treatment system builders based in Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 46 companies tracked

RevenueBase identified 46 industrial water treatment system builders headquartered in Norway as of September 2026 and tracks 501 professional contacts across them, including 203 with verified work emails. Oslo is the largest hub.

This list covers industrial water treatment system builders headquartered in Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

46Companies

501Contacts tracked

203Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest industrial water treatment system builders based in Norway

Ranked by team size

Top 25 of 46 industrial water treatment system builders based in Norway, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial water treatment system builders: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Eliquo PMI	Strong evidence	Sandefjord, NorwayHQ checked Sep 17, 2026	201-500	81 contacts →
	Strong evidence “ELIQUO PMI is one of Norway's leading contractors in the design and construction of plants for water and wastewater treatment, district heating, district cooling and process…” Source: RevenueBase Database · checked Sep 17, 2026
2	Alfsen OG Gunderson AS	Indirect evidence	Oslo, NorwayHQ checked Sep 17, 2026	51-200	40 contacts →
	Indirect evidence “Vi mener alvor med vårt slogan "For et renere miljø".” Source: RevenueBase Database · checked Sep 17, 2026
3	Inrigo AS	Indirect evidence	Trondheim, NorwayHQ checked Sep 17, 2026	11-50	33 contacts →
	Indirect evidence “Inrigo AS is a fully owned Norwegian company established in 2008, with headquarter in Trondheim.” Source: RevenueBase Database · checked Sep 17, 2026
4	Biovac Environmental Technology AS	Partial evidence	Frogner, NorwayHQ checked Sep 17, 2026	11-50	28 contacts →
	Partial evidence “Biovac leverer produkter og skreddersydde løsninger for behandling av avløpsvann til private, kommunale og industrielle kunder.” Source: RevenueBase Database · checked Sep 17, 2026
5	Veolia Water Tech Norge	Partial evidence	Sandefjord, NorwayHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “Veolia leverer totale løsninger for avløpsrensing, vannbehandling, rehabilitering og service, til kommuner og industri i Norge.” Source: RevenueBase Database · checked Sep 17, 2026
6	Salsnes Filter	Partial evidence	Namsos, NorwayHQ checked Sep 17, 2026	11-50	22 contacts →
	Partial evidence “Salsnes Filter’s patented filter technology for wastewater treatment and effluent treatment is leading the Norwegian market in municipal primary treatment.” Source: RevenueBase Database · checked Sep 17, 2026
7	Nordisk Vannteknikk AS	Indirect evidence	Drammen, NorwayHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Nordisk Vannteknikk er en totalleverandør av renseteknologi for behandling av forurenset vann.” Source: RevenueBase Database · checked Sep 17, 2026
8	Renasys	Indirect evidence	Førde, NorwayHQ checked Sep 17, 2026	11-50	18 contacts →
	Indirect evidence “Life in fjords around the world is being suffocated.” Source: RevenueBase Database · checked Sep 17, 2026
9	M Vest Water	Strong evidence	Bergen, NorwayHQ checked Sep 17, 2026	11-50	16 contacts →
	Strong evidence “M Vest Water is a system and solution provider of clean and safe water.” Source: RevenueBase Database · checked Sep 17, 2026
10	Onsite Treatment Services	Strong evidence	Tananger, NorwayHQ checked Sep 17, 2026	11-50	14 contacts →
	Strong evidence “OTS offers a large and modern rental fleet, water treatment, slop treatment, tank cleaning, filtration, cuttings handling, vacuum systems, mud skips, well service pumps, pumping…” Source: RevenueBase Database · checked Sep 17, 2026
11	Klart Vann AS	Indirect evidence	Sandnes, NorwayHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Totalleverandør av vannbehandling Klart Vann har siden 2006 levert rene, trygge og effektive vannløsninger til kunder over hele Norge.” Source: RevenueBase Database · checked Sep 17, 2026
12	BWT Norge	Indirect evidence	Oslo, NorwayHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “BWT Birger Christensen AS ble startet i 1928 og er blant Nordens førende virksomheter innen vannbehandlingsanlegg.” Source: RevenueBase Database · checked Sep 17, 2026
13	Norwegian Technology	Partial evidence	Mekjarvik, NorwayHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “We provide services for the development of sustainable waste treatment solutions for offshore and onshore industry and municipal applications using proprietary treatment…” Source: RevenueBase Database · checked Sep 17, 2026
14	Global Concept Mitco AS	Partial evidence	Oslo, NorwayHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “Global Concept MITCO AS (tidligere Industrikjemikalier MITCO AS) bygger på mer enn 40 års erfaring innen fagområdet industriell vannbehandling.” Source: RevenueBase Database · checked Sep 17, 2026
15	Normex	Strong evidence	Ålesund, NorwayHQ checked Sep 17, 2026	1-10	8 contacts →
	Strong evidence “We deliver the best possible quality solutions for water treatment and disinfection.” Source: RevenueBase Database · checked Sep 17, 2026
16	Stauper Water Technologies	Strong evidence	Porsgrunn, NorwayHQ checked Sep 17, 2026	1-10	8 contacts →
	Strong evidence “Stauper Water Technologies AS is a Norwegian water treatment technology company that has developed, patented and commercialized a suite of technologies and solutions to help oil…” Source: RevenueBase Database · checked Sep 17, 2026
17	Vulkan Engineering	Strong evidence	Oslo, NorwayHQ checked Sep 17, 2026	1-10	6 contacts →
	Strong evidence “Vulkan Engineering AS is a leader in advanced seawater treatment systems and specialized engineering services to the international offshore industry.” Source: RevenueBase Database · checked Sep 17, 2026
18	Arcon AS	Partial evidence	Oslo, NorwayHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “Arcon AS ble etablert i 1946, og avdelingen Industriell Vannbehandling ble opprettet i 1988.” Source: RevenueBase Database · checked Sep 17, 2026
19	Slamrensing AS	Indirect evidence	Revetal, NorwayHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “Vannrensing- og sedimenteringsselskap med høyt fokus på miljø.” Source: RevenueBase Database · checked Sep 17, 2026
20	Ennox Technology	Strong evidence	Stavanger, NorwayHQ checked Sep 17, 2026	11-50	6 contacts →
	Strong evidence “Ennox Technology delivers customized technological solutions for water treatment, oil recovery, waste management, and soil remediation, helping industries optimize efficiency and…” Source: RevenueBase Database · checked Sep 17, 2026
21	Filtra AS	Partial evidence	Skodje, NorwayHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “FILTRA AS supplies filtration solutions for handling air, water and different kind of liquids.” Source: RevenueBase Database · checked Sep 17, 2026
22	Niprox Technology AS	Indirect evidence	Florø, NorwayHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Niprox leverer vannbehandlingsteknologi for lukkede vannbårne varme- og kjøleanlegg.” Source: RevenueBase Database · checked Sep 17, 2026
23	Cevia Solutions	Strong evidence	Spikkestad, NorwayHQ checked Sep 17, 2026	1-10	4 contacts →
	Strong evidence “Engineering services, products for water treatment, process industry etc.” Source: RevenueBase Database · checked Sep 17, 2026
24	Mivanor AS	Strong evidence	Sandnes, NorwayHQ checked Sep 17, 2026	1-10	4 contacts →
	Strong evidence “We provide an innovative, self-developed solution for treating industrial waste water.” Source: RevenueBase Database · checked Sep 17, 2026
25	Norsk Miljøservice AS	Indirect evidence	Sykkylven, NorwayHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Norsk Miljøservice AS er lokalisert på Nord-Vestlandet med en avdeling i Drammen.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: industrial water treatment system builders. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names industrial water treatment system builders.
Partial evidence: Its own public description names part of industrial water treatment system builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial water treatment system builders. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 46 industrial water treatment system builders based in Norway

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 203 reachable decision-makers.

Free signup · no credit card

View the full list →

Industrial water treatment system builders based in Norway at a glance

As of Sep 17, 2026

40.5%Verified-email coverage

10.9Average contacts per company

11-50Median size (employees)

10.9%Largest-city concentration · Oslo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 46 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among industrial water treatment system builders, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Norway whose own description of what they do matches “industrial water treatment system builders”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names industrial water treatment system builders), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among industrial water treatment system builders, and records with no verified work email. Companies headquartered outside Norway are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 203 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names industrial water treatment system builders, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many industrial water treatment system builders are there based in Norway?

RevenueBase identified 46 industrial water treatment system builders headquartered in Norway as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Eliquo PMI, headquartered in Sandefjord, tops this list with the largest team on record.

Which city has the most industrial water treatment system builders?

Oslo leads with 5 headquartered companies, followed by Sandefjord (5) and Drammen (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 203 verified decision-maker contacts tracked across these 46 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 46 industrial water treatment system builders based in Norway. Start with a free account, no credit card.

Download this list →

Related lists

Industrial water treatment system builders by geography

Browse the directory

Browse: Companies home · All Norway lists · All Industrial water treatment system builders lists · New lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.