Company lists · Data refreshed September 2026

Top 25 Hydrogeology consultants based in New Zealand

RevenueBase identified 136 company matches for hydrogeology consultants associated with New Zealand as of September 2026 and tracks 2,524 professional contacts across them, including 1,714 with verified work emails. Auckland is the largest hub.

This list covers company matches for hydrogeology consultants 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 September 20, 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 Sep 20, 2026 How this list was built
136Companies
2,524Contacts tracked
1,714Verified emails
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The 25 largest hydrogeology consultants based in New Zealand

Ranked by team size
Top 25 of 136 company matches for hydrogeology consultants based in New Zealand, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchAuckland Central, New ZealandHQ recorded Sep 20, 20261,001-5,000958 contacts →

Exact match

“At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchChristchurch, New ZealandHQ recorded Sep 20, 202651-200121 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 · Sep 20, 2026 · View company records in RevenueBase
3Exact matchTakapuna, New ZealandHQ recorded Sep 20, 202651-20084 contacts →

Exact match

“Our company has evolved from humble yet visionary origins to become the multi-disciplinary consultancy it is today.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchGisborne, New ZealandHQ recorded Sep 20, 202651-20081 contacts →

Exact match

“LDE are specialists in geotechnical, civil, environmental and structural engineering.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchAuckland, New ZealandHQ recorded Sep 20, 202651-20077 contacts →

Exact match

“Fraser Thomas is a Multi-Disciplinary, client focused consulting firm specialising in resource management, engineering and surveying.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchChristchurch, New ZealandHQ recorded Sep 20, 202651-20069 contacts →

Exact match

“Davis Ogilvie (DO) is a trusted multidisciplinary engineering consultancy in the South Island with an unwavering commitment to the region, its communities and the environment.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchTakapuna, New ZealandHQ recorded Sep 20, 202611-5043 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 · Sep 20, 2026 · View company records in RevenueBase
8Exact matchWhangarei, New ZealandHQ recorded Sep 20, 202611-5040 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 · Sep 20, 2026 · View company records in RevenueBase
9Exact matchWellington, New ZealandHQ recorded Sep 20, 202611-5040 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 · Sep 20, 2026 · View company records in RevenueBase
10Exact matchSouth Dunedin, New ZealandHQ recorded Sep 20, 202611-5039 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 · Sep 20, 2026 · View company records in RevenueBase
11Exact matchChristchurch, New ZealandHQ recorded Sep 20, 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 · Sep 20, 2026 · View company records in RevenueBase
12Exact matchAuckland, New ZealandHQ recorded Sep 20, 202611-5038 contacts →

Exact match

“Today ACH employs over 40 staff in their Auckland office with a number being Chartered Professional Engineers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchLower Hutt/kāpiti Coast, New ZealandHQ recorded Sep 20, 202611-5037 contacts →

Exact match

“Great People.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchWellington, New ZealandHQ recorded Sep 20, 202611-5037 contacts →

Exact match

“Awa Environmental is shaping stormwater to reduce flood risk, protect critical assets and infrastructure, and build resilient communities and thriving ecosystems.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchAuckland, New ZealandHQ recorded Sep 20, 202611-5033 contacts →

Exact match

“Initia is a specialist geotechnical engineering consultancy that provides design, advisory and construction observation services for building, infrastructure and earthworks…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchHamilton, New ZealandHQ recorded Sep 20, 202611-5031 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchHenderson, New ZealandHQ recorded Sep 20, 202651-20028 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 · Sep 20, 2026 · View company records in RevenueBase
18Exact matchTaupo, New ZealandHQ recorded Sep 20, 202611-5027 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 · Sep 20, 2026 · View company records in RevenueBase
19Exact matchAuckland, New ZealandHQ recorded Sep 20, 202611-5026 contacts →

Exact match

“Trusted, Innovative, Water Solutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchChristchurch, New ZealandHQ recorded Sep 20, 202611-5024 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 · Sep 20, 2026 · View company records in RevenueBase
21Exact matchAuckland, New ZealandHQ recorded Sep 20, 202651-20023 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 · Sep 20, 2026 · View company records in RevenueBase
22Exact matchAuckland, New ZealandHQ recorded Sep 20, 202611-5020 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 · Sep 20, 2026 · View company records in RevenueBase
23Exact matchAuckland & Christchurch, New ZealandHQ recorded Sep 20, 202611-5017 contacts →

Exact match

“Geotechnical Engineers of Choice!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchAuckland Central, New ZealandHQ recorded Sep 20, 202611-5016 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 · Sep 20, 2026 · View company records in RevenueBase
25Exact matchRotorua, New ZealandHQ recorded Sep 20, 202611-5016 contacts →

Exact match

“BSK Consulting Engineers are a fun team of committed and experienced engineers based in Rotorua and Tauranga.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 136 hydrogeology consultants based in New Zealand

See the full list, filter by size, metro and specialty, and access 1,714 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Hydrogeology consultants based in New Zealand at a glance

As of Sep 20, 2026
67.9%Verified-email coverage
18.6Average contacts per company
1-10Median size (employees)
30.9%Largest-city concentration · Auckland
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
74
11-50
51
51-200
10
1,001-5,000
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 136 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 “hydrogeology consultants” 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 1,714 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 September 20, 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 “hydrogeology consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many hydrogeology consultants are there based in New Zealand?

RevenueBase identified 136 company matches for hydrogeology consultants associated with New Zealand as of September 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?

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

Which city has the most hydrogeology consultants?

Auckland leads with 42 company records, followed by Christchurch (19) and Hamilton (8).

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 1,714 professional contacts with verified work emails tracked across these 136 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 September 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 136 hydrogeology consultants 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.