Company lists · Data refreshed September 2026

Top 25 Hydrogeological consulting firms based in New Zealand

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 76 companies tracked

RevenueBase identified 76 hydrogeological consulting firms headquartered in New Zealand as of September 2026 and tracks 864 professional contacts across them, including 508 with verified work emails and 20 with mobile numbers. Auckland is the largest hub.

This list covers hydrogeological consulting firms headquartered in New Zealand, 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 3, 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 3, 2026 86% judged on-target in blind review

76Companies

864Contacts tracked

508Verified emails

20Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest hydrogeological consulting firms based in New Zealand

Ranked by team size

Top 25 of 76 hydrogeological consulting firms based in New Zealand, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeological consulting firms: 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	Riley Consultants	Indirect evidence	Takapuna, New ZealandHQ checked Sep 3, 2026	51-200	86 contacts →
	Indirect evidence “Our company has evolved from humble yet visionary origins to become the multi-disciplinary consultancy it is today.” Source: RevenueBase Database · checked Sep 3, 2026
2	LDE Engineers Scientists	Indirect evidence	Gisborne, New ZealandHQ checked Sep 3, 2026	51-200	82 contacts →
	Indirect evidence “LDE are specialists in geotechnical, civil, environmental and structural engineering.” Source: RevenueBase Database · checked Sep 3, 2026
3	Fraser Thomas LTD	Partial evidence	Auckland, New ZealandHQ checked Sep 3, 2026	51-200	76 contacts →
	Partial evidence “Fraser Thomas is a Multi-Disciplinary, client focused consulting firm specialising in resource management, engineering and surveying.” Source: RevenueBase Database · checked Sep 3, 2026
4	GWE Consulting Engineers	Partial evidence	Takapuna, New ZealandHQ checked Sep 3, 2026	11-50	42 contacts →
	Partial evidence “GWE Consulting Engineers is a multi-disciplinary engineering consultancy providing geotechnical, civil and water, environmental, wastewater and stormwater engineering services and…” Source: RevenueBase Database · checked Sep 3, 2026
5	Geosolve LTD	Indirect evidence	South Dunedin, New ZealandHQ checked Sep 3, 2026	11-50	40 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 3, 2026
6	Damwatch Engineering LTD	Indirect evidence	New ZealandHQ checked Sep 3, 2026	11-50	40 contacts →
	Indirect evidence “Damwatch is a highly respected niche consultancy business based in Wellington, New Zealand and provide services to hydropower, water and irrigation clients internationally.” Source: RevenueBase Database · checked Sep 3, 2026
7	AWA Environmental	Indirect evidence	Wellington, New ZealandHQ checked Sep 3, 2026	11-50	37 contacts →
	Indirect evidence “Awa Environmental is shaping stormwater to reduce flood risk, protect critical assets and infrastructure, and build resilient communities and thriving ecosystems.” Source: RevenueBase Database · checked Sep 3, 2026
8	Verum Group	Partial evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	11-50	32 contacts →
	Partial evidence “Verum Group is an environmental research and consulting company, with specialist knowledge in Environmental and Occupational Hygiene monitoring, energy technologies and…” Source: RevenueBase Database · checked Sep 3, 2026
9	Aqualinc Research Limited	Partial evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	11-50	29 contacts →
	Partial evidence “Aqualinc Research Limited is an independent provider of research-based consulting services for water and land management.” Source: RevenueBase Database · checked Sep 3, 2026
10	Soil & Rock Consultants	Indirect evidence	Henderson, New ZealandHQ checked Sep 3, 2026	51-200	27 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 3, 2026
11	Watersmart	Indirect evidence	Auckland, New ZealandHQ checked Sep 3, 2026	11-50	26 contacts →
	Indirect evidence “Trusted, Innovative, Water Solutions.” Source: RevenueBase Database · checked Sep 3, 2026
12	EGL Engineering Geology Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 3, 2026	11-50	20 contacts →
	Indirect evidence “Engineering Geology Ltd (EGL) is a professional consultancy practice specialising in geotechnical and earthquake engineering and engineering geology.” Source: RevenueBase Database · checked Sep 3, 2026
13	Dtce Consulting Engineers	Partial evidence	Wellington, New ZealandHQ checked Sep 3, 2026	11-50	16 contacts →
	Partial evidence “Welcome to DTCE Consulting Engineers, Wellington’s structural and geotechnical specialists.” Source: RevenueBase Database · checked Sep 3, 2026
14	Williamson Water & Land Advisory	Indirect evidence	Kumeu, New ZealandHQ checked Sep 3, 2026	11-50	16 contacts →
	Indirect evidence “Williamson Water & Land Advisory (WWLA) is a New Zealand based, employee owned, niche environmental consultancy.” Source: RevenueBase Database · checked Sep 3, 2026
15	Irricon	Indirect evidence	Timaru South, New ZealandHQ checked Sep 3, 2026	11-50	15 contacts →
	Indirect evidence “Irricon Resource Solutions is a leading environmental consultancy based throughout Canterbury, Otago and the North Island.” Source: RevenueBase Database · checked Sep 3, 2026
16	Geologix Consulting Engineers LTD	Indirect evidence	Silverdale, New ZealandHQ checked Sep 3, 2026	11-50	14 contacts →
	Indirect evidence “Geologix is a professional geotechnical, environmental and civil engineering company striving to make a difference through sustainable, honest and flexible engineering solutions.” Source: RevenueBase Database · checked Sep 3, 2026
17	Landtech Consulting	Partial evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	11-50	12 contacts →
	Partial evidence “LandTech Consulting is a specialist geotechnical service provider comprising a team of qualified Geotechnical Engineers and Engineering Geologists, with experience in geotechnical…” Source: RevenueBase Database · checked Sep 3, 2026
18	HAL Consulting LTD	Partial evidence	Parnell, New ZealandHQ checked Sep 3, 2026	11-50	12 contacts →
	Partial evidence “HAL Consulting Ltd (HAL) is a niche engineering consultancy that specialises in wastewater, stormwater and water supply network modelling and strategic planning, and data…” Source: RevenueBase Database · checked Sep 3, 2026
19	E2environmental LTD	Indirect evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	11-50	10 contacts →
	Indirect evidence “e2Environmental is a highly experienced, full service civil engineering consultancy specialising in water engineering and land development.” Source: RevenueBase Database · checked Sep 3, 2026
20	RS ENG LTD	Partial evidence	Whangarei, New ZealandHQ checked Sep 3, 2026	11-50	10 contacts →
	Partial evidence “RS Eng is specialised in providing Geotechnical, Civil, Structural & Seismic engineering consulting services.” Source: RevenueBase Database · checked Sep 3, 2026
21	Trenchmate	Indirect evidence	Papakura, New ZealandHQ checked Sep 3, 2026	11-50	10 contacts →
	Indirect evidence “Trenchmate is a New Zealand-owned company dedicated to delivering certified shoring, groundwater treatment, and solids control solutions.” Source: RevenueBase Database · checked Sep 3, 2026
22	Traverse Environmental Limited	Indirect evidence	Taupo, New ZealandHQ checked Sep 3, 2026	11-50	9 contacts →
	Indirect evidence “Traverse Environmental is a professional services consultancy specialising in planning, freshwater science and project management.” Source: RevenueBase Database · checked Sep 3, 2026
23	Earthtech Consulting Limited	Partial evidence	Pukekohe, New ZealandHQ checked Sep 3, 2026	1-10	9 contacts →
	Partial evidence “Earthtech Consulting Limited is a specialist geotechnical consulting practice working in the fields of geotechnical engineering, engineering geology and hydrogeology.” Source: RevenueBase Database · checked Sep 3, 2026
24	Blueline Consulting NZ	Indirect evidence	Taupo, New ZealandHQ checked Sep 3, 2026	11-50	8 contacts →
	Indirect evidence “We are a forward-thinking consultancy driven by our passion for pioneering design concepts and advancing sustainable solutions.” Source: RevenueBase Database · checked Sep 3, 2026
25	Geopro Limited	Indirect evidence	New ZealandHQ checked Sep 3, 2026	11-50	8 contacts →
	Indirect evidence “Geopro Limited is multi-disciplinary geology and geotechnical engineering consultancy established in Auckland, New Zealand.” Source: RevenueBase Database · checked Sep 3, 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: hydrogeological consulting firms. 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 hydrogeological consulting firms.
Partial evidence: Its own public description names part of hydrogeological consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeological consulting firms. 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 25 of 76 hydrogeological consulting firms based in New Zealand

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 508 reachable decision-makers.

Free signup · no credit card

View the full list →

Hydrogeological consulting firms based in New Zealand at a glance

As of Sep 3, 2026

58.8%Verified-email coverage

2.3%Mobile-number coverage

11.4Average contacts per company

1-10Median size (employees)

27.6%Largest-city concentration · Auckland

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

3931–60

29961–90

16990–180

1180+

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 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 New Zealand whose own description of what they do matches “hydrogeological consulting firms”. 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 hydrogeological consulting firms), 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 hydrogeological consulting firms, and records with no verified work email. Companies headquartered outside New Zealand 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, 508 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

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 hydrogeological consulting firms, 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 hydrogeological consulting firms are there based in New Zealand?

RevenueBase identified 76 hydrogeological consulting firms headquartered in New Zealand 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?

Riley Consultants, headquartered in Auckland, tops this list with the largest team on record.

Which city has the most hydrogeological consulting firms?

Auckland leads with 21 headquartered companies, followed by Christchurch (11) and Hamilton (4).

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 508 verified decision-maker contacts tracked across these 76 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.

Ready to reach these companies? Verified emails and direct dials for all 76 hydrogeological consulting firms based in New Zealand. Start with a free account, no credit card.

Download this list →

Related lists

Hydrogeological consulting firms by geography

Browse the directory

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.