Company lists · Data refreshed September 2026
Top 25 Water engineering firms based in Denmark
RevenueBase identified 63 water engineering firms headquartered in Denmark as of September 2026 and tracks 6,857 professional contacts across them, including 508 with verified work emails. Copenhagen is the largest hub.
This list covers water engineering firms headquartered in Denmark, 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 21, 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.
The 25 largest water engineering firms based in Denmark
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,699 contacts → | ||||
Indirect evidence “At NIRAS, we engineer solutions for a shared future.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,760 contacts → | ||||
Indirect evidence “I Aarsleff-koncernen er vi drevet af ordentlighed.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,427 contacts → | ||||
Partial evidence “There is no substitute for water.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 78 contacts → | ||||
Indirect evidence “WE CREATE INFRASTRUCTURE AND PERFORM COASTAL PROTECTION FOR THE SOCIETY'S ONGOING DEVELOPMENT Zøllner is a contracting company that has worked with several different types of…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 65 contacts → | ||||
Indirect evidence “Zacho-Lind A/S er et moderne entreprenørfirma med stor ekspertise i udførelse af anlægsopgaver.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 46 contacts → | ||||
Partial evidence “From Engineering to Value Engineering!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 44 contacts → | ||||
Indirect evidence “ØLLGAARD Rådgivende Ingeniører har specialiseret sig i bæredygtige løsninger inden for forsyning, byggeri og energi.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 32 contacts → | ||||
Indirect evidence “Om Aquagain Aquagain er en professionel og anerkendt producent og leverandør af effektive og miljørigtige løsninger, der bl.a.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 25 contacts → | ||||
Indirect evidence “INGENIØRGRUPPEN - en del af Thranekær Vi er et rådgivende ingeniørfirma, som blev grundlagt i 1956 og har med sine mere end 60 år, stor erfaring indenfor teknisk rådgivning i…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 24 contacts → | ||||
Indirect evidence “Vand og Teknik er eksperter i projektering og levering af teknisk udstyr til vandforsyninger, på nybyggeri såvel som renoveringsopgaver.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Indirect evidence “VI ER DINE SPECIALISTER Vi hos Hartvig Consult er et rådgivende ingeniørfirma, som er specialister i kloakering, kloakrenovering, skybrudssikring, anlæg af veje…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 19 contacts → | ||||
Indirect evidence “Tri-Consult A/S er et fuldservice rådgivende ingeniørfirma indenfor byggeri og anlæg med hovedkontor i Århus.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 18 contacts → | ||||
Indirect evidence “Stjernholm indtager en central placering i markedet for vandbehandling på både offentlige og private renseanlæg, i kloaksystemer og på vandværker i hele landet.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 18 contacts → | ||||
Indirect evidence “Hos WASYS A/S har vi specialiseret os i at styre, overvåge og flytte vand.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 16 contacts → | ||||
Indirect evidence “Nordvand leverer drikkevand og håndterer spildevand for i alt forbrugere i Gentofte og Gladsaxe Kommuner.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Strong evidence “Nordic International Water ApS is new established engineering, management, and development consultancy with ambition of a global reach to deliver innovative solutions for our…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 contacts → | ||||
Indirect evidence “DA/EN Carsten Søndergaard Consult ApS er et konsulentfirma med stærke ingeniør kompetencer indenfor afløbsteknik Carsten Søndergaard og Finn Hjerrild Johansen arbejder begge med…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 contacts → | ||||
Indirect evidence “Rådgivning indenfor vand, kloak og klimatilpasning” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Indirect evidence “ENTREPRENØR PÅ FYN - AUTORISERET KLOAKMESTER OG VVS-INSTALLATØR Står du og mangler en professionel entreprenør, der arbejder med bæredygtighed, samt kan hjælpe dig med en bred…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Vestjysk Kloak & Anlæg ApS stræber efter af være en seriøs og eftertragtet samarbejdspartner samt arbejdsplads i hele Midt- og Vestjylland.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Hos Norplan Gruppen er vi dedikerede til at levere høj kvalitet og sikkerhed i vores entreprenørarbejde.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Vi understøtter forsyninger og industrien i at levere rent vand til samfundet på en bæredygtig måde.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Silberg Rådgivende Ingeniører er specialister inden for totalrådgivning og projektledelse ifm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Vanman består af to profiler, der siden 2013 har arbejdet sammen om planlægning og implementering af bæredygtige løsninger til håndtering af regn- og spildevand.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “KARER ApS startede tilbage i 2005 som en servicevirksomhed inden for betonbranchen, som leverede viden om beton og betonopgaver generelt.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: water engineering firms. 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 water engineering firms.
- Partial evidence
- Its own public description names part of water engineering firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water engineering firms. 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 63 water engineering firms based in Denmark
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Water engineering firms based in Denmark at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Denmark, so it is reported there. Company counts and contact totals on this page are exact for Denmark, over 63 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 engineering firms, 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 Denmark whose own description of what they do matches “water engineering firms”. 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 engineering firms), 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 engineering firms, and records with no verified work email. Companies headquartered outside Denmark 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, 508 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 21, 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 engineering firms, 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 engineering firms are there based in Denmark?
RevenueBase identified 63 water engineering firms headquartered in Denmark 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?
NIRAS, headquartered in Allerod Capital Of Denmark, tops this list with the largest team on record.
Which city has the most water engineering firms?
Copenhagen leads with 3 headquartered companies, followed by Viby J (3) and Brabrand (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 508 verified decision-maker contacts tracked across these 63 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 63 water engineering firms based in Denmark. Start with a free account, no credit card.
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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.
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