Company lists · Data refreshed September 2026

Top 14 Municipal wastewater treatment contractors based in Denmark

Name: Municipal wastewater treatment contractors based in Denmark
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 29 companies tracked

RevenueBase identified 29 municipal wastewater treatment contractors headquartered in Denmark as of September 2026 and tracks 907 professional contacts across them, including 40 with verified work emails. Aabenraa is the largest hub.

This list covers municipal wastewater treatment contractors 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 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

29Companies

907Contacts tracked

40Verified emails

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The 14 largest municipal wastewater treatment contractors based in Denmark

Ranked by team size

Top 14 of 29 municipal wastewater treatment contractors based in Denmark, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to municipal wastewater treatment contractors: 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	Biofos	Indirect evidence	København K, DenmarkHQ checked Sep 17, 2026	51-200	171 contacts →
	Indirect evidence “BIOFOS er Danmarks største spildevandsvirksomhed.” Source: RevenueBase Database · checked Sep 17, 2026
2	ARWOS	Indirect evidence	Aabenraa, DenmarkHQ checked Sep 17, 2026	51-200	62 contacts →
	Indirect evidence “Navnet Arwos er en leg med ord og dialekt og betyder "Vores Arv".” Source: RevenueBase Database · checked Sep 17, 2026
3	KD Group	Indirect evidence	Vejle, DenmarkHQ checked Sep 17, 2026	11-50	46 contacts →
	Indirect evidence “From Engineering to Value Engineering!” Source: RevenueBase Database · checked Sep 17, 2026
4	Ringkøbing-Skjern Forsyning A S	Indirect evidence	Skjern, DenmarkHQ checked Sep 17, 2026	51-200	34 contacts →
	Indirect evidence “I det vestlige Jylland ligger Ringkøbing-Skjern Kommune.” Source: RevenueBase Database · checked Sep 17, 2026
5	Aquagain A S	Indirect evidence	Brørup, DenmarkHQ checked Sep 17, 2026	51-200	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 17, 2026
6	Vand OG Teknik A S	Indirect evidence	Brabrand, DenmarkHQ checked Sep 17, 2026	11-50	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 17, 2026
7	Lemvig Vand A S	Indirect evidence	Lemvig, DenmarkHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Lemvig Vand A/S (LVS) er et forsyningsselskab der tager sig af produktion af rent drikkevand, distribution og rensning af spildevand.” Source: RevenueBase Database · checked Sep 17, 2026
8	Hjørring Vandselskab	Indirect evidence	Hjørring, DenmarkHQ checked Sep 17, 2026	51-200	19 contacts →
	Indirect evidence “Hjørring Vandselskab A/S blev etableret som et aktieselskab i 2007.” Source: RevenueBase Database · checked Sep 17, 2026
9	Stjernholm A S	Indirect evidence	Randers, DenmarkHQ checked Sep 17, 2026	11-50	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 17, 2026
10	Middelfart Spildevand A S	Indirect evidence	Middelfart, DenmarkHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Som spildevandsselskab i hjertet af Middelfart Kommune håndterer vi dagligt rensning af spildevand og afledning af regnvand for både borgere og virksomheder.” Source: RevenueBase Database · checked Sep 17, 2026
11	Biokube	Indirect evidence	Tappernøje, DenmarkHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “BioKube is a Danish environmental company founded in 2003.” Source: RevenueBase Database · checked Sep 17, 2026
12	Nordvand	Indirect evidence	Gentofte, DenmarkHQ checked Sep 17, 2026	51-200	16 contacts →
	Indirect evidence “Nordvand leverer drikkevand og håndterer spildevand for i alt forbrugere i Gentofte og Gladsaxe Kommuner.” Source: RevenueBase Database · checked Sep 17, 2026
13	Morcon & Nørgård APS	Indirect evidence	Viborg, DenmarkHQ checked Sep 17, 2026	51-200	10 contacts →
	Indirect evidence “Thomas Nørgård ApS er et entreprenør firma, der tilbyder en bred vifte af ydelser så som alle former for anlægsarbejder, belægningsarbejde, støbearbejde og maskinudlejning med…” Source: RevenueBase Database · checked Sep 17, 2026
14	Karer APS	Indirect evidence	Brøndby Strand, DenmarkHQ checked Sep 17, 2026	1-10	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 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: municipal wastewater treatment contractors. 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 municipal wastewater treatment contractors.
Partial evidence: Its own public description names part of municipal wastewater treatment contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal wastewater treatment contractors. 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 14 of 29 municipal wastewater treatment contractors based in Denmark

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Municipal wastewater treatment contractors based in Denmark at a glance

As of Sep 17, 2026

4.4%Verified-email coverage

31.3Average contacts per company

11-50Median size (employees)

3.4%Largest-city concentration · Aabenraa

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 Denmark, so it is reported there. Company counts and contact totals on this page are exact for Denmark, 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 municipal wastewater treatment contractors, 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 “municipal wastewater treatment contractors”. 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 municipal wastewater treatment contractors), 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 municipal wastewater treatment contractors, 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, 40 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 municipal wastewater treatment contractors, 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 municipal wastewater treatment contractors are there based in Denmark?

RevenueBase identified 29 municipal wastewater treatment contractors 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?

Biofos, headquartered in Kobenhavn K, tops this list with the largest team on record.

Which city has the most municipal wastewater treatment contractors?

Aabenraa leads with 1 headquartered companies, followed by Brabrand (1) and Brondby Strand (1).

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 40 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 17, 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.