Company lists · Data refreshed September 2026

Top 25 Water infrastructure engineers based in New Zealand

Name: Water infrastructure engineers based in New Zealand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 46 companies tracked

RevenueBase identified 46 water infrastructure engineers headquartered in New Zealand as of September 2026 and tracks 1,033 professional contacts across them, including 298 with verified work emails. Auckland is the largest hub.

This list covers water infrastructure engineers 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 22, 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 22, 2026 86% judged on-target in blind review

46Companies

1,033Contacts tracked

298Verified emails

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

The 25 largest water infrastructure engineers based in New Zealand

Ranked by team size

Top 25 of 46 water infrastructure engineers based in New Zealand, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water infrastructure engineers: 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	Opus International Consultants Limited	Indirect evidence	Wellington, New ZealandHQ checked Sep 22, 2026	1,001-5,000	568 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
2	Filtec LTD	Partial evidence	Mt Wellington, New ZealandHQ checked Sep 22, 2026	51-200	86 contacts →
	Partial evidence “FILTEC - Making Water Safer Experts in supplying and servicing water and wastewater treatment systems.” Source: RevenueBase Database · checked Sep 22, 2026
3	Pipeline & Civil LTD	Indirect evidence	Auckland, New ZealandHQ checked Sep 22, 2026	51-200	56 contacts →
	Indirect evidence “Pipeline and Civil are proven to provide innovative and technically sound solutions to complex projects involving critical assets; designed to mitigate risks while guarding a…” Source: RevenueBase Database · checked Sep 22, 2026
4	LUTRA	Partial evidence	Lower Hutt, New ZealandHQ checked Sep 22, 2026	11-50	44 contacts →
	Partial evidence “Established in 2006, Lutra are a team of water and wastewater specialist solutions providers with a team of over 39 spread throughout New Zealand.” Source: RevenueBase Database · checked Sep 22, 2026
5	Watersmart	Partial evidence	Auckland, New ZealandHQ checked Sep 22, 2026	11-50	26 contacts →
	Partial evidence “Trusted, Innovative, Water Solutions.” Source: RevenueBase Database · checked Sep 22, 2026
6	Devan Plastics Limited	Partial evidence	Tauranga, New ZealandHQ checked Sep 22, 2026	51-200	18 contacts →
	Partial evidence “We manufacture and design Water and Waste Water Solutions for the Urban, Rural and Commercial Market.” Source: RevenueBase Database · checked Sep 22, 2026
7	Sitecare	Indirect evidence	Taupo, New ZealandHQ checked Sep 22, 2026	51-200	15 contacts →
	Indirect evidence “For over 25 years, SiteCare has been a prominent national leader in providing a diverse range of environmental and industrial services.” Source: RevenueBase Database · checked Sep 22, 2026
8	Utilities Infrastructure NZ	Indirect evidence	Rolleston, New ZealandHQ checked Sep 22, 2026	51-200	13 contacts →
	Indirect evidence “Established in 2013 we have gone from strength to strength through the commitment of our people and the investment in our specialised plant and equipment, Focused on providing…” Source: RevenueBase Database · checked Sep 22, 2026
9	Projectmax LTD	Strong evidence	Auckland, New ZealandHQ checked Sep 22, 2026	1-10	12 contacts →
	Strong evidence “Water utility companies often will invest in their infrastructure without a clear strategy.” Source: RevenueBase Database · checked Sep 22, 2026
10	HAL Consulting LTD	Strong evidence	Parnell, New ZealandHQ checked Sep 22, 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 22, 2026
11	SWE Southern Water Engineering	Strong evidence	Blenheim, New ZealandHQ checked Sep 22, 2026	11-50	12 contacts →
	Strong evidence “SWE (Southern Water Engineering) is a leading Marlborough-based engineering company specialising in water engineering, electrical and automation solutions, and pumping technology.” Source: RevenueBase Database · checked Sep 22, 2026
12	Bellcon Limited	Strong evidence	Ruakaka, New ZealandHQ checked Sep 22, 2026	11-50	12 contacts →
	Strong evidence “We’re proud to be a construction company delivering project management, engineering, and commissioning services for water and wastewater infrastructure.” Source: RevenueBase Database · checked Sep 22, 2026
13	Innoflow Technologies NZ Limited	Indirect evidence	Dairy Flat, New ZealandHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “Wastewater treatment, Community Pressure Sewers, Wastewater Design, Build & Operate.” Source: RevenueBase Database · checked Sep 22, 2026
14	Mason Engineers NZ LTD	Partial evidence	East Tamaki, New ZealandHQ checked Sep 22, 2026	11-50	9 contacts →
	Partial evidence “Mason Engineers (NZ) Limited is a company whose name has been synonymous with engineering in New Zealand for more than seventy years.” Source: RevenueBase Database · checked Sep 22, 2026
15	Hydroflux NZ	Strong evidence	Auckland, New ZealandHQ checked Sep 22, 2026	51-200	5 contacts →
	Strong evidence “Hydroflux is a sustainability driven organisation delivering unrivalled engineering, scientific and technological solutions for a more secure future, with a focus on water…” Source: RevenueBase Database · checked Sep 22, 2026
16	Allflow NZ	Partial evidence	Richmond, New ZealandHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “Allflow has been serving the top of the South since the 1960s, including waste water services from 1977.” Source: RevenueBase Database · checked Sep 22, 2026
17	Arawai Engineering Consulting	Strong evidence	New Plymouth, New ZealandHQ checked Sep 22, 2026	1-10	4 contacts →
	Strong evidence “We assist in the design and construction management of above and below ground infrastructure; from buildings to land development, roading, and three waters networks.” Source: RevenueBase Database · checked Sep 22, 2026
18	Pipeline & Infrastructure North LTD	Strong evidence	Wainui, New ZealandHQ checked Sep 22, 2026	11-50	4 contacts →
	Strong evidence “Pipeline & Infrastructure (North) Ltd are an established Civil Engineering Contractor, specialising in the construction, repair, and rehabilitation of large diameter pipelines and…” Source: RevenueBase Database · checked Sep 22, 2026
19	Neuflow Projects	Indirect evidence	Rukuhia, New ZealandHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Neuflow Projects are a team of project specialists encompassing innovative conceptual planning, investigations and feasibility studies, preliminary designs, detailed designs…” Source: RevenueBase Database · checked Sep 22, 2026
20	Apex Water LTD	Partial evidence	Timaru, New ZealandHQ checked Sep 22, 2026	51-200	3 contacts →
	Partial evidence “Apex Water promises guaranteed environmental performance and that makes us leaders in water & wastewater treatment.” Source: RevenueBase Database · checked Sep 22, 2026
21	Aqua-K NZ Limited	Indirect evidence	Pukekohe, New ZealandHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Specialising in end-to-end wastewater management, we offer bespoke solutions that span from initial concept to fully commissioned plants.” Source: RevenueBase Database · checked Sep 22, 2026
22	Civil HUB Consultants LTD	Strong evidence	Auckland, New ZealandHQ checked Sep 22, 2026	1-10	3 contacts →
	Strong evidence “Civil Engineering Services - Public Infrastructure - Land Development and Subdivision - Flood Analysis - Detention Tank - Stormwater Treatment Systems - On-site Sewer Disposal -…” Source: RevenueBase Database · checked Sep 22, 2026
23	Above Water Engineering LTD	Partial evidence	Hamilton, New ZealandHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “Above Water works in the land development sector as well as for local authorities providing 3 waters design and construction management services.” Source: RevenueBase Database · checked Sep 22, 2026
24	E And J Contractors	Indirect evidence	Tauhara, New ZealandHQ checked Sep 22, 2026	11-50	2 contacts →
	Indirect evidence “E&J Contractors is a long-established Drainage and Contracting Company based in Taupo with projects throughout New Zealand.” Source: RevenueBase Database · checked Sep 22, 2026
25	Project LAB NZ Limited	Strong evidence	Titirangi, New ZealandHQ checked Sep 22, 2026	1-10	2 contacts →
	Strong evidence “Project Lab is an engineering consultancy delivering water, civil and environmental projects.” Source: RevenueBase Database · checked Sep 22, 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 infrastructure engineers. 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 infrastructure engineers.
Partial evidence: Its own public description names part of water infrastructure engineers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water infrastructure engineers. 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 46 water infrastructure engineers based in New Zealand

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 298 reachable decision-makers.

Free signup · no credit card

View the full list →

Water infrastructure engineers based in New Zealand at a glance

As of Sep 22, 2026

28.8%Verified-email coverage

22.5Average contacts per company

11-50Median size (employees)

28.3%Largest-city concentration · Auckland

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 46 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 infrastructure engineers, 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 infrastructure engineers”. 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 infrastructure engineers), 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 infrastructure engineers, 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, 298 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 22, 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 infrastructure engineers, 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 infrastructure engineers are there based in New Zealand?

RevenueBase identified 46 water infrastructure engineers 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?

Opus International Consultants Limited, headquartered in Wellington, tops this list with the largest team on record.

Which city has the most water infrastructure engineers?

Auckland leads with 13 headquartered companies, followed by Wellington (3) and Hamilton (2).

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 298 verified decision-maker contacts tracked across these 46 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 46 water infrastructure engineers based in New Zealand. Start with a free account, no credit card.

Download this list →

Related lists

Water infrastructure engineers 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.