Company lists · Data refreshed September 2026

Top 17 Water management technology companies based in Norway

RevenueBase identified 29 water management technology companies headquartered in Norway as of September 2026 and tracks 255 professional contacts across them, including 72 with verified work emails. Oslo is the largest hub.

This list covers water management technology companies 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 22, 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 22, 2026 86% judged on-target in blind review
29Companies
255Contacts tracked
72Verified emails
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The 17 largest water management technology companies based in Norway

Ranked by team size
Top 17 of 29 water management technology companies based in Norway, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water management technology companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSandefjord, NorwayHQ checked Sep 22, 202611-5027 contacts →

Indirect evidence

“Veolia leverer totale løsninger for avløpsrensing, vannbehandling, rehabilitering og service, til kommuner og industri i Norge.”

Source: RevenueBase Database · checked Sep 22, 2026
2Partial evidenceAndebu, NorwayHQ checked Sep 22, 202651-20019 contacts →

Partial evidence

“Kingspan Water & Energy AS utvikler bærekraftige løsninger for anskaffelse, lagring og beskyttelse av vann og energi.”

Source: RevenueBase Database · checked Sep 22, 2026
3Indirect evidenceDrammen, NorwayHQ checked Sep 22, 202611-5018 contacts →

Indirect evidence

“Nordisk Vannteknikk er en totalleverandør av renseteknologi for behandling av forurenset vann.”

Source: RevenueBase Database · checked Sep 22, 2026
4Partial evidenceBergen, NorwayHQ checked Sep 22, 202611-5016 contacts →

Partial evidence

“M Vest Water is a system and solution provider of clean and safe water.”

Source: RevenueBase Database · checked Sep 22, 2026
5Partial evidenceUlsteinvik, NorwayHQ checked Sep 22, 202651-20013 contacts →

Partial evidence

“Entec er kort for «environmental technology», og er et teknologikonsern bestående av tre driftsselskap; ENTEC Evotec, ENTEC Brimer og ENTEC Norpartners.”

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceOslo, NorwayHQ checked Sep 22, 202611-5011 contacts →

Indirect evidence

“BWT Birger Christensen AS ble startet i 1928 og er blant Nordens førende virksomheter innen vannbehandlingsanlegg.”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceRudshøgda, NorwayHQ checked Sep 22, 202611-508 contacts →

Indirect evidence

“Helnor er et innovativt selskap med fokus på å utvikle, produsere og selge gode løsninger og produkter.”

Source: RevenueBase Database · checked Sep 22, 2026
8Partial evidenceÅlesund, NorwayHQ checked Sep 22, 20261-108 contacts →

Partial evidence

“We deliver the best possible quality solutions for water treatment and disinfection.”

Source: RevenueBase Database · checked Sep 22, 2026
9Strong evidencePorsgrunn, NorwayHQ checked Sep 22, 20261-108 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 22, 2026
10Indirect evidenceTrondheim, NorwayHQ checked Sep 22, 202611-506 contacts →

Indirect evidence

“SediCon is a supplier of proven and reliable sediment handling solutions.”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceRevetal, NorwayHQ checked Sep 22, 20261-106 contacts →

Indirect evidence

“Vannrensing- og sedimenteringsselskap med høyt fokus på miljø.”

Source: RevenueBase Database · checked Sep 22, 2026
12Strong evidenceStavanger, NorwayHQ checked Sep 22, 202611-506 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 22, 2026
13Strong evidenceNorge, NorwayHQ checked Sep 22, 20261-104 contacts →

Strong evidence

“Hydrofence delivers innovative engineering services focused on sustainability, technology, and the future of water management.”

Source: RevenueBase Database · checked Sep 22, 2026
14Partial evidenceSandnes, NorwayHQ checked Sep 22, 20261-104 contacts →

Partial evidence

“We provide an innovative, self-developed solution for treating industrial waste water.”

Source: RevenueBase Database · checked Sep 22, 2026
15Strong evidenceOppegaard, NorwayHQ checked Sep 22, 20261-104 contacts →

Strong evidence

“Appropriate Water Solutions Scandinavian Water Technology AS (Scanwater) has been a supplier to the water and wastewater sector since 1985 and has extensive experience, excellent…”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceDrammen, NorwayHQ checked Sep 22, 20261-102 contacts →

Indirect evidence

“Vi skal være en pålitelig partner innen kjemikaliehåndtering og vannbehandling ved å tilby våre kunder komponenter samt systemer og service.”

Source: RevenueBase Database · checked Sep 22, 2026
17Strong evidenceOs, NorwayHQ checked Sep 22, 20261-101 contacts →

Strong evidence

“Our water treatment plants are built on innovative and environmentally conscious technology.”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 17 of 29 water management technology companies based in Norway

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Water management technology companies based in Norway at a glance

As of Sep 22, 2026
28.2%Verified-email coverage
8.8Average contacts per company
1-10Median size (employees)
10.3%Largest-city concentration · Oslo
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
8
51-200
5

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 29 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 water management technology companies, 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 “water management technology companies”. 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 water management technology companies), 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 water management technology companies, 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, 72 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 22, 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 water management technology companies, 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 water management technology companies are there based in Norway?

RevenueBase identified 29 water management technology companies 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?

Veolia Water Tech Norge, headquartered in Sandefjord, tops this list with the largest team on record.

Which city has the most water management technology companies?

Oslo leads with 3 headquartered companies, followed by Sandefjord (3) and Drammen (2).

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 72 verified decision-maker contacts tracked across these 29 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 22, 2026.

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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.