Company lists · Data refreshed October 2026

Top 25 Hydrogeological services based in New Zealand

RevenueBase identified 82 company matches for hydrogeological services associated with New Zealand as of October 2026 and tracks 1,685 professional contacts across them, including 972 with verified work emails. Auckland is the largest hub.

This list covers company matches for hydrogeological services associated with New Zealand, 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 October 26, 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 Oct 26, 2026 How this list was built
82Companies
1,685Contacts tracked
972Verified emails
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The 25 largest hydrogeological services based in New Zealand

Ranked by team size
Top 25 of 82 company matches for hydrogeological services based in New Zealand, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 26, 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 matchChristchurch, New ZealandHQ recorded Oct 26, 2026501-1,000756 contacts →

Exact match

“Seequent, The Bentley Subsurface Company, helps organisations to understand the underground, giving them the confidence to make better decisions faster.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
2Exact matchChristchurch, New ZealandHQ recorded Oct 26, 202651-200123 contacts →

Exact match

“ENGEO Ltd (formally Geoscience Consulting) is a specialist consultancy group providing Engineering Geological, Geophysical, Environmental and Geotechnical Engineering services.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
3Exact matchTakapuna, New ZealandHQ recorded Oct 26, 202611-5048 contacts →

Exact match

“GWE Consulting Engineers is a multi-disciplinary engineering consultancy providing geotechnical, civil and water, environmental, wastewater and stormwater engineering services and…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
4Exact matchWellington, New ZealandHQ recorded Oct 26, 202611-5044 contacts →

Exact match

“Damwatch is a highly respected niche consultancy business based in Wellington, New Zealand and provide services to hydropower, water and irrigation clients internationally.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
5Exact matchSouth Dunedin, New ZealandHQ recorded Oct 26, 202611-5042 contacts →

Exact match

“At GeoSolve we understand the importance of managing geological risk, and our specialist knowledge and proven track record means we can provide practical resilient solutions…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
6Exact matchChristchurch, New ZealandHQ recorded Oct 26, 202651-20039 contacts →

Exact match

“March Construction brings together the geotechnical and water infrastructure expertise, which when combined with the micro-tunnelling expertise of our sister company Rob Carr…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
7Exact matchWhangarei, New ZealandHQ recorded Oct 26, 202611-5033 contacts →

Exact match

“Cook Costello is a New Zealand multidisciplinary engineering consultancy working across geotechnical, civil and structural engineering, geophysics, land surveying, land…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
8Exact matchHamilton, New ZealandHQ recorded Oct 26, 202611-5032 contacts →

Exact match

“We are specialists in geotechnical engineering and land and water contamination.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
9Exact matchAuckland, New ZealandHQ recorded Oct 26, 202611-5031 contacts →

Exact match

“Engineering Geology Ltd (EGL) is a professional consultancy practice specialising in geotechnical and earthquake engineering and engineering geology.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
10Exact matchHenderson, New ZealandHQ recorded Oct 26, 202651-20030 contacts →

Exact match

“With a rich legacy spanning over three decades, Soil & Rock Consultants stand at the forefront of the geotechnical, environmental, civil, and geological engineering landscape in…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
11Exact matchTaupo, New ZealandHQ recorded Oct 26, 202611-5030 contacts →

Exact match

“JRG Energy is an established group of personalized consultants servicing all aspects of the Oil and Gas, Geothermal, and Renewable Energy Industries.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
12Exact matchChristchurch, New ZealandHQ recorded Oct 26, 202611-5028 contacts →

Exact match

“Aqualinc Research Limited is an independent provider of research-based consulting services for water and land management.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
13Exact matchAuckland, New ZealandHQ recorded Oct 26, 202611-5026 contacts →

Exact match

“Trusted, Innovative, Water Solutions.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
14Exact matchAuckland, New ZealandHQ recorded Oct 26, 202651-20026 contacts →

Exact match

“Geotechnical Engineering, and Engineering Geology, including Site Investigations, Earthworks Supervision and Control, Expansive Soils, Dynamic Probing, Foundation & Retaining Wall…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
15Exact matchAuckland Central, New ZealandHQ recorded Oct 26, 202611-5022 contacts →

Exact match

“Andy O’Sullivan was established to offer a nimble international best practice service in geotechnical design to the local infrastructure industry.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
16Exact matchKumeu, New ZealandHQ recorded Oct 26, 202611-5021 contacts →

Exact match

“Williamson Water & Land Advisory (WWLA) is a New Zealand based, employee owned, niche environmental consultancy.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
17Exact matchAuckland & Christchurch, New ZealandHQ recorded Oct 26, 202611-5018 contacts →

Exact match

“Geotechnical Engineers of Choice!”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
18Exact matchTauranga, New ZealandHQ recorded Oct 26, 20261-1018 contacts →

Exact match

“OUR SERVICES - Measurement Science, BATHYMETRIC & TOPOGRAPHIC Surveys We measure and model anything below, above or near the waterline in any format our clients require.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
19Exact matchAuckland, New ZealandHQ recorded Oct 26, 202611-5016 contacts →

Exact match

“Local knowledge, global thinking, future-ready outcomes.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
20Exact matchAuckland & Christchurch, New ZealandHQ recorded Oct 26, 202651-20015 contacts →

Exact match

“McMillan Drilling is a leading multi-disciplinary drilling company operating throughout New Zealand and the Pacific.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
21Exact matchChristchurch, New ZealandHQ recorded Oct 26, 202611-5013 contacts →

Exact match

“LandTech Consulting is a specialist geotechnical service provider comprising a team of qualified Geotechnical Engineers and Engineering Geologists, with experience in geotechnical…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
22Exact matchChristchurch, New ZealandHQ recorded Oct 26, 20261-1013 contacts →

Exact match

“Specialist engineering consulting firm with expertise in hydraulic modelling of rivers and streams, river engineering, geomorphology, hydrology and hydrologic modelling, remote…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
23Exact matchOnekawa, New ZealandHQ recorded Oct 26, 202611-5013 contacts →

Exact match

“Civil Services HB Ltd specialises in civil and geotechnical engineering design, surveying (topographical, construction setout), quality assurance compaction testing and…”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
24Exact matchChristchurch, New ZealandHQ recorded Oct 26, 202611-5011 contacts →

Exact match

“e2Environmental is a highly experienced, full service civil engineering consultancy specialising in water engineering and land development.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase
25Exact matchPukekohe, New ZealandHQ recorded Oct 26, 20261-1010 contacts →

Exact match

“Welcome to Earthtech Consulting Limited.”

Recorded in the RevenueBase company graph · Oct 26, 2026 · View company records in RevenueBase

Showing 25 of 82 hydrogeological services based in New Zealand

See the full list, filter by size, metro and specialty, and access 972 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrogeological services based in New Zealand at a glance

As of Oct 26, 2026
57.7%Verified-email coverage
20.5Average contacts per company
1-10Median size (employees)
22.0%Largest-city concentration · Auckland
Oct 26, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
28
51-200
7
501-1,000
1

Email recency for this list is measured worldwide rather than for New Zealand, so it is reported there. Company counts and contact totals on this page are exact for New Zealand, over 82 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 New Zealand whose business descriptions match “hydrogeological 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 972 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 October 26, 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 “hydrogeological services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrogeological services are there based in New Zealand?

RevenueBase identified 82 company matches for hydrogeological services associated with New Zealand as of October 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?

Seequent tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most hydrogeological services?

Auckland leads with 18 company records, followed by Christchurch (17) and Hamilton (4).

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 972 professional contacts with verified work emails tracked across these 82 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 October 26, 2026.

Ready to reach these companies? Verified emails and direct dials for all 82 hydrogeological services based in New Zealand. 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 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.