Company lists · Data refreshed November 2026

Top 20 Effluent testing services based in the Netherlands

RevenueBase identified 32 company matches for effluent testing services associated with the Netherlands as of November 2026 and tracks 1,394 professional contacts across them, including 398 with verified work emails. Deventer is the largest hub.

This list covers company matches for effluent testing services associated with the Netherlands, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
32Companies
1,394Contacts tracked
398Verified emails
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The 20 largest effluent testing services based in the Netherlands

Ranked by team size
Top 20 of 32 company matches for effluent testing services based in the Netherlands, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHouten, NetherlandsHQ recorded Nov 6, 202651-200206 contacts →

Exact match

“AQUON is de ideale partner voor watergerelateerd onderzoek.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHaarlem, NetherlandsHQ recorded Nov 6, 202651-200109 contacts →

Exact match

“Het Waterlaboratorium is een zelfstandig opererend semipubliek bedrijf met drie sterke aandeelhouders: Dunea Duin en Water, PWN Waterleidingbedrijf Noord-Holland en Waternet…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchGlimmen, NetherlandsHQ recorded Nov 6, 202651-200104 contacts →

Exact match

“WLN is een onafhankelijk partner in onderzoek en advies voor drink, industrie- en afvalwater.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchZwolle, NetherlandsHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Helder in wateronderzoek.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchEdam, NetherlandsHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Wij zijn één van de vijf waterschapslaboratoria in Nederland en een stichting zonder winstoogmerk.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBerkel En Rodenrijs, NetherlandsHQ recorded Nov 6, 202611-5047 contacts →

Exact match

“Technolab is de meest ervaren partner als het aankomt op zorgen voor een schone lucht, veilig water en goede materialen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchKrimpen Aan Den Ijssel, NetherlandsHQ recorded Nov 6, 202651-20027 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchRijen, NetherlandsHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“SEAL Analytical is a global manufacturer of environmental testing equipment primarily for the water quality industry and other environmental and industrial applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchUlvenhout, NetherlandsHQ recorded Nov 6, 20261-1015 contacts →

Exact match

“Welcome to SEEF!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAngerlo, NetherlandsHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“Diseo voert een breed scala aan milieu- en onderzoeksactiviteiten uit op land en water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWaalwijk, NetherlandsHQ recorded Nov 6, 20261-108 contacts →

Exact match

“We are an innovative and fast growing biotech company with a line of water quality analysers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDen Burg, NetherlandsHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Qsenz is een jong en dynamisch bedrijf gespecialiseerd in het leveren, installeren en onderhouden van water- en gas analyse apparatuur.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDordrecht, NetherlandsHQ recorded Nov 6, 20261-105 contacts →

Exact match

“ADKEON is een onafhankelijk milieuadvies- en onderzoeksbureau dat organisaties ondersteunt bij complexe vraagstukken op het gebied van (water)bodem- onderzoeken en saneringen…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAsperen, NetherlandsHQ recorded Nov 6, 20261-103 contacts →

Exact match

“AQURAAT is gespecialiseerd in waterkwaliteit.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBergschenhoek, NetherlandsHQ recorded Nov 6, 20261-102 contacts →

Exact match

“With over 30 years of laboratory expertise, Tailored Lab Solutions provides customized services to partners in industries like the chemical, environmental, pharmaceutical, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchOss, NetherlandsHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Aquasurvey is een onafhankelijk advies en -onderzoeksbureau, gespecialiseerd in het meten, bemonsteren en analyseren van afvalwaterstromen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWeesp, NetherlandsHQ recorded Nov 6, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBarendrecht, NetherlandsHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Exolab beschikt over expertise op het gebied van onderzoek, inventarisatie, monstername, advies en nazorg.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchZwartsluis, NetherlandsHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Benten Water Solutions is a research, consultancy and instrumentation company which aims to assist water utilities, water management boards, environmental agencies and industry to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchGees, NetherlandsHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Een onafhankelijk technisch bureau en gespecialiseerd in water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 20 of 32 effluent testing services based in the Netherlands

See the full list, filter by size, metro and specialty, and access 398 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Effluent testing services based in the Netherlands at a glance

As of Nov 6, 2026
28.6%Verified-email coverage
43.6Average contacts per company
11-50Median size (employees)
6.2%Largest-city concentration · Deventer
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
5
51-200
7
501-1,000
3
1,001-5,000
2
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 32 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the Netherlands whose business descriptions match “effluent testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 398 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “effluent testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many effluent testing services are there based in the Netherlands?

RevenueBase identified 32 company matches for effluent testing services associated with the Netherlands as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Aquon Organisatie Voor Wateronderzoek EN Advies tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most effluent testing services?

Deventer leads with 2 company records, followed by Ah (1) and Ak (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 398 professional contacts with verified work emails tracked across these 32 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.