Company lists · Data refreshed September 2026

Top 25 Hydrogeological consulting firms based in the Netherlands

Name: Hydrogeological consulting firms based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 191 companies tracked

RevenueBase identified 191 hydrogeological consulting firms headquartered in the Netherlands as of September 2026 and tracks 2,379 professional contacts across them, including 1,242 with verified work emails and 119 with mobile numbers. Amsterdam is the largest hub.

This list covers hydrogeological consulting firms headquartered in the Netherlands, 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

191Companies

2,379Contacts tracked

1,242Verified emails

119Mobile numbers

Explore all 191 companies → Free signup · no credit card · 500 free credits

The 25 largest hydrogeological consulting firms based in the Netherlands

Ranked by team size

Top 25 of 191 hydrogeological consulting firms based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names hydrogeological consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	VAN DEN HerikIndirect evidence	Hj, NetherlandsHQ checked Sep 3, 2026	51-200	156
	“About the company: Van den Herik: hydraulic engineering in all its guises Van den Herik has been active in the field of hydraulic engineering since the 1940s.” Source: company website · checked Sep 3, 2026
2	ATKBIndirect evidence	Zoetermeer, NetherlandsHQ checked Sep 3, 2026	51-200	115
	“Praktisch, nuchter en deskundig.” Source: company website · checked Sep 3, 2026
3	WLNIndirect evidence	Glimmen, NetherlandsHQ checked Sep 3, 2026	51-200	100
	“WLN is een onafhankelijk partner in onderzoek en advies voor drink, industrie- en afvalwater.” Source: company website · checked Sep 3, 2026
4	HKV Lijn In WaterIndirect evidence	Lelystad, NetherlandsHQ checked Sep 3, 2026	51-200	94
	“HKV, de kennisondernemer voor water en veiligheid HKV levert, als onafhankelijk bureau, hoogwaardige onderzoek- en adviesdiensten op het gebied van water en veiligheid in binnen-…” Source: company website · checked Sep 3, 2026
5	flux.partnersIndirect evidence	Diemen, NetherlandsHQ checked Sep 3, 2026	51-200	92
	“At Flux Partners, you'll be part of a team of entrepreneurial and experienced specialists serving clients in the infrastructure, energy, water, industry, and government sectors.” Source: company website · checked Sep 3, 2026
6	GeofoxxIndirect evidence	Oldenzaal, NetherlandsHQ checked Sep 3, 2026	51-200	80
	“Geofoxx is een succesvolle dienstverlener voor milieuvraagstukken met vestigingen in Gouda, Oldenzaal en Tilburg.” Source: company website · checked Sep 3, 2026
7	Wiertsema & Partners B.VIndirect evidence	Tolbert, NetherlandsHQ checked Sep 3, 2026	51-200	72
	“Wiertsema & Partners is al ruim 46 jaar expert in het uitvoeren en leveren van geo- en milieutechnisch onderzoek, monitoring en advies.” Source: company website · checked Sep 3, 2026
8	Nelen & SchuurmansIndirect evidence	Utrecht, NetherlandsHQ checked Sep 3, 2026	51-200	67
	“Nelen & Schuurmans is a water management consultancy & IT company.” Source: company website · checked Sep 3, 2026
9	Panterra Geoconsultants BVIndirect evidence	Bz, NetherlandsHQ checked Sep 3, 2026	51-200	60
	“PanTerra Geoconsultants is a leading geological service provider with over 35 years of worldwide industry experience.” Source: company website · checked Sep 3, 2026
10	Tijhuis Ingenieurs BVIndirect evidence	Hoorn, NetherlandsHQ checked Sep 3, 2026	51-200	54
	“Advies in en om water Tijhuis Ingenieurs is een onafhankelijk advies- en ingenieursbureau.” Source: company website · checked Sep 3, 2026
11	Ingenieursbureau Boorsma B.VIndirect evidence	Drachten, NetherlandsHQ checked Sep 3, 2026	51-200	46
	“Ingenieursbureau Boorsma is een advies- en ingenieursbureau dat opdrachten uitvoert binnen de branches “bouw en civiel” en “milieu en geologie”.” Source: company website · checked Sep 3, 2026
12	Crux Engineering BVIndirect evidence	Amsterdam, NetherlandsHQ checked Sep 3, 2026	51-200	45
	“Deskundig advies op het gebied van: Geo Engineering & Omgevingsbeïnvloeding.” Source: company website · checked Sep 3, 2026
13	VAN DER Straaten Aannemingsmaatschappij B.VIndirect evidence	Hansweert, NetherlandsHQ checked Sep 3, 2026	51-200	43
	“Van der Straaten staat bekend als een ondernemende aannemer met meer dan honderd jaar ervaring.” Source: company website · checked Sep 3, 2026
14	SILTIndirect evidence	Middelbeers, NetherlandsHQ checked Sep 3, 2026	51-200	38
	“Wij zijn Silt.” Source: company website · checked Sep 3, 2026
15	HydroscopeIndirect evidence	Breda, NetherlandsHQ checked Sep 3, 2026	51-200	38
	“Hydroscope is Nederlands grootste adviesbureau op het gebied van waterkwaliteit en -veiligheid binnen gebouwen.” Source: company website · checked Sep 3, 2026
16	Tjaden B.VIndirect evidence	Zevenbergschen Hoek, NetherlandsHQ checked Sep 3, 2026	51-200	37
	“Tjaden is een gespecialiseerde, in binnen- en buitenland opererende aannemer op het gebied van bronbemaling, boringen, grondwatersystemen en waterbehandelingstechniek.” Source: company website · checked Sep 3, 2026
17	OrtageoIndirect evidence	Almelo, NetherlandsHQ checked Sep 3, 2026	11-50	36
	“Een veilige omgeving om in te bouwen, wonen en werken.” Source: company website · checked Sep 3, 2026
18	Periplus GroupIndirect evidence	Se, NetherlandsHQ checked Sep 3, 2026	11-50	31
	“The Periplus Group is a consultancy organization providing specialized personnel and knowledge in the field of hydrography and related disciplines such as geology, geophysics…” Source: company website · checked Sep 3, 2026
19	BWZ IngenieursIndirect evidence	Everdingen, NetherlandsHQ checked Sep 3, 2026	11-50	29
	“BWZ Ingenieurs is eind 2007 opgericht en is een middelgroot bureau voor ingenieurs- en adviesdiensten.” Source: company website · checked Sep 3, 2026
20	ColsenIndirect evidence	Gx, NetherlandsHQ checked Sep 3, 2026	11-50	28
	“Colsen B.V, is an international expert with 30+ years of expertise in the field of water, environment and sustainable energy.” Source: company website · checked Sep 3, 2026
21	Bouwrisk BVIndirect evidence	Eindhoven, NetherlandsHQ checked Sep 3, 2026	11-50	27
	“BouwRisk B.V.” Source: company website · checked Sep 3, 2026
22	GeoexpertsIndirect evidence	Wageningen, NetherlandsHQ checked Sep 3, 2026	51-200	26
	“wij leven geo’ - partner in advies, project en detachering - 2500 jaar Geo ervaring in huis - deskundig op elke locatie - inhoudelijk betrokken werkgever” Source: company website · checked Sep 3, 2026
23	Vhgm Part Of SwecoIndirect evidence	Ht, NetherlandsHQ checked Sep 3, 2026	11-50	25
	“VHGM is een toonaangevend specialistisch ontwerp- en adviesbureau met een deskundigheid op het gebied van Bodemenergie en Aquathermie.” Source: company website · checked Sep 3, 2026
24	VAN Dijk Geotechniek & Milieu B.VIndirect evidence	De Meern, NetherlandsHQ checked Sep 3, 2026	11-50	25
	“Adviesbureau in geotechniek en milieu Advisering en uitvoering van o.a- sonderingen- funderings- en bouwputadvies - milieukundig bodemonderzoek - bodemsanering -…” Source: company website · checked Sep 3, 2026
25	Terrascan B.VIndirect evidence	Lijnden, NetherlandsHQ checked Sep 3, 2026	11-50	25
	Source: company website · checked Sep 3, 2026

Showing 25 of 191 hydrogeological consulting firms based in the Netherlands

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Hydrogeological consulting firms based in the Netherlands at a glance

As of Sep 3, 2026

1-10Median size (employees)

AmsterdamLargest hub · 7 HQs

119Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

106

11-50

51-200

501-1,000

1,001-5,000

Verified emails by last verification

0–30

31–60

61–90

700

90–180

443

180+

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 hydrogeological consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the Netherlands whose own description of what they do matches “hydrogeological consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among hydrogeological consulting firms, and records with no verified work email. Companies headquartered outside Netherlands 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 an evidence 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, 1,242 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 3, 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

How many hydrogeological consulting firms are there based in the Netherlands?

RevenueBase identified 191 hydrogeological consulting firms headquartered in the Netherlands 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?

VAN DEN Herik, headquartered in Hj, tops this list with the largest team on record.

Which city has the most hydrogeological consulting firms?

Amsterdam leads with 7 headquartered companies, followed by Rotterdam (6) and Amersfoort (6).

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 1,242 verified decision-maker contacts tracked across these 191 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 3, 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.