Company lists · Data refreshed September 2026

Top 25 Water resources consulting firms based in New Zealand

Name: Water resources 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 21, 2026 61 companies tracked

RevenueBase identified 61 water resources consulting firms headquartered in New Zealand as of September 2026 and tracks 2,320 professional contacts across them, including 1,420 with verified work emails. Auckland is the largest hub.

This list covers water resources 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 21, 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 21, 2026 86% judged on-target in blind review

61Companies

2,320Contacts tracked

1,420Verified emails

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The 25 largest water resources consulting firms based in New Zealand

Ranked by team size

Top 25 of 61 water resources consulting firms based in New Zealand, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to water resources 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	Tonkin Taylor	Indirect evidence	Auckland Central, New ZealandHQ checked Sep 21, 2026	1,001-5,000	958 contacts →
	Indirect evidence “At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.” Source: RevenueBase Database · checked Sep 21, 2026
2	Opus International Consultants Limited	Indirect evidence	Wellington, New ZealandHQ checked Sep 21, 2026	1,001-5,000	568 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
3	Pattle Delamore Partners	Indirect evidence	Auckland, New ZealandHQ checked Sep 21, 2026	201-500	277 contacts →
	Indirect evidence “PDP is one of Aotearoa New Zealand’s leading environmental science, engineering, and advisory consultancies.” Source: RevenueBase Database · checked Sep 21, 2026
4	Fraser Thomas LTD	Strong evidence	Auckland, New ZealandHQ checked Sep 21, 2026	51-200	77 contacts →
	Strong evidence “Fraser Thomas is a Multi-Disciplinary, client focused consulting firm specialising in resource management, engineering and surveying.” Source: RevenueBase Database · checked Sep 21, 2026
5	Mitchell Daysh	Partial evidence	Dunedin, New ZealandHQ checked Sep 21, 2026	11-50	45 contacts →
	Partial evidence “Mitchell Daysh is a specialist environmental and planning consultancy with the right people to navigate New Zealand's most complex resource management challenges to our government…” Source: RevenueBase Database · checked Sep 21, 2026
6	Damwatch Engineering LTD	Partial evidence	Wellington, New ZealandHQ checked Sep 21, 2026	11-50	40 contacts →
	Partial 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 21, 2026
7	AWA Environmental	Indirect evidence	Wellington, New ZealandHQ checked Sep 21, 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 21, 2026
8	Watersmart	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “Trusted, Innovative, Water Solutions.” Source: RevenueBase Database · checked Sep 21, 2026
9	Aqualinc Research Limited	Strong evidence	Christchurch, New ZealandHQ checked Sep 21, 2026	11-50	24 contacts →
	Strong evidence “Aqualinc Research Limited is an independent provider of research-based consulting services for water and land management.” Source: RevenueBase Database · checked Sep 21, 2026
10	Novo Group Limited	Partial evidence	Christchurch, New ZealandHQ checked Sep 21, 2026	11-50	23 contacts →
	Partial evidence “Novo Group Limited is a professional services consultancy specialising in: − resource management, town planning and land use development; − traffic planning and engineering; and −…” Source: RevenueBase Database · checked Sep 21, 2026
11	Tektus	Indirect evidence	Auckland, New ZealandHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “In early 2015, Tektus was formed to create a distinct multi-disciplinary practice with strong values.” Source: RevenueBase Database · checked Sep 21, 2026
12	Williamson Water & Land Advisory	Partial evidence	Kumeu, New ZealandHQ checked Sep 21, 2026	11-50	16 contacts →
	Partial evidence “Williamson Water & Land Advisory (WWLA) is a New Zealand based, employee owned, niche environmental consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
13	Irricon	Partial evidence	Timaru, New ZealandHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “Irricon Resource Solutions is a leading environmental consultancy based throughout Canterbury, Otago and the North Island.” Source: RevenueBase Database · checked Sep 21, 2026
14	Stradegy	Partial evidence	Hawkes Bay, New ZealandHQ checked Sep 21, 2026	11-50	13 contacts →
	Partial evidence “Stradegy is a Hawke's Bay-based environmental planning and resource management consultancy providing expert planning and environmental services to local government and private…” Source: RevenueBase Database · checked Sep 21, 2026
15	Projectmax LTD	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	1-10	12 contacts →
	Partial evidence “Water utility companies often will invest in their infrastructure without a clear strategy.” Source: RevenueBase Database · checked Sep 21, 2026
16	HAL Consulting LTD	Strong evidence	Parnell, New ZealandHQ checked Sep 21, 2026	11-50	12 contacts →
	Strong 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 21, 2026
17	TE Miro Water Consultants	Partial evidence	Hamilton, New ZealandHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “Te Miro Water provides advisory services in the green infrastructure, stormwater and flood risk management industries.” Source: RevenueBase Database · checked Sep 21, 2026
18	Land River SEA Consulting	Partial evidence	Christchurch, New ZealandHQ checked Sep 21, 2026	1-10	10 contacts →
	Partial evidence “Specialist engineering consulting firm with expertise in hydraulic modelling of rivers and streams, river engineering, geomorphology, hydrology and hydrologic modelling, remote…” Source: RevenueBase Database · checked Sep 21, 2026
19	Traverse Environmental Limited	Indirect evidence	Taupo, New ZealandHQ checked Sep 21, 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 21, 2026
20	E2environmental LTD	Partial evidence	Christchurch, New ZealandHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “e2Environmental is a highly experienced, full service civil engineering consultancy specialising in water engineering and land development.” Source: RevenueBase Database · checked Sep 21, 2026
21	Viridis Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “Viridis (adjective; Latin): “green”.” Source: RevenueBase Database · checked Sep 21, 2026
22	DVLP	Indirect evidence	Cambridge, New ZealandHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “DVLP is a New Zealand-based project management consultancy delivering high-quality outcomes across infrastructure, environmental, and primary industry sectors.” Source: RevenueBase Database · checked Sep 21, 2026
23	CLC Consulting Group Limited	Strong evidence	Auckland, New ZealandHQ checked Sep 21, 2026	11-50	9 contacts →
	Strong evidence “We offer Consulting Services in the following fields: Civil & Environmental Engineering, Structural Engineering, Land Surveying and Resource Management Planning.” Source: RevenueBase Database · checked Sep 21, 2026
24	Collaborations	Indirect evidence	Christchurch, New ZealandHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “Collaborations is an applied science consultancy - What is applied science?” Source: RevenueBase Database · checked Sep 21, 2026
25	Submergent Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “Submergent Limited provides computer modelling services to the New Zealand water engineering industry.” Source: RevenueBase Database · checked Sep 21, 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: water resources 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 water resources consulting firms.
Partial evidence: Its own public description names part of water resources consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water resources 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 61 water resources consulting firms based in New Zealand

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Water resources consulting firms based in New Zealand at a glance

As of Sep 21, 2026

61.2%Verified-email coverage

38.0Average contacts per company

1-10Median size (employees)

26.2%Largest-city concentration · Auckland

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 61 companies.

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 water resources 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 “water resources 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 water resources 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 water resources 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, 1,420 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 21, 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 water resources 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 water resources consulting firms are there based in New Zealand?

RevenueBase identified 61 water resources 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?

Tonkin Taylor, headquartered in Auckland, tops this list with the largest team on record.

Which city has the most water resources consulting firms?

Auckland leads with 16 headquartered companies, followed by Christchurch (11) and Hamilton (3).

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 1,420 verified decision-maker contacts tracked across these 61 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 21, 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 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.