Company lists · Data refreshed September 2026

Top 25 Water infrastructure contractors based in New Zealand

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 75 companies tracked

RevenueBase identified 75 water infrastructure contractors headquartered in New Zealand as of September 2026 and tracks 1,545 professional contacts across them, including 637 with verified work emails. Auckland is the largest hub.

This list covers water infrastructure contractors 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 19, 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 19, 2026 86% judged on-target in blind review

75Companies

1,545Contacts tracked

637Verified emails

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The 25 largest water infrastructure contractors based in New Zealand

Ranked by team size

Top 25 of 75 water infrastructure contractors based in New Zealand, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water infrastructure contractors: 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	Hynds Pipe Systems Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	501-1,000	338 contacts →
	Indirect evidence “Hynds Pipe Systems Ltd is the largest operating company within the family owned Hynds Group.” Source: RevenueBase Database · checked Sep 19, 2026
2	HUMES	Partial evidence	Auckland, New ZealandHQ checked Sep 19, 2026	201-500	209 contacts →
	Partial evidence “Humes is a leading manufacturer and supplier of systems for managing water and other utilities, primarily in urban environments and roading.” Source: RevenueBase Database · checked Sep 19, 2026
3	Citycare Water	Partial evidence	Christchurch, New ZealandHQ checked Sep 19, 2026	501-1,000	103 contacts →
	Partial evidence “Citycare Water is New Zealand's most trusted three waters provider in New Zealand.” Source: RevenueBase Database · checked Sep 19, 2026
4	Filtec LTD	Partial evidence	Mt Wellington, New ZealandHQ checked Sep 19, 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 19, 2026
5	United Civil Construction Limited	Partial evidence	Whangarei, New ZealandHQ checked Sep 19, 2026	51-200	66 contacts →
	Partial evidence “United Civil Construction is a leading NZ civil engineering construction company that delivers exceptional infrastructure projects nationally.” Source: RevenueBase Database · checked Sep 19, 2026
6	Pipeline & Civil LTD	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 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 19, 2026
7	LUTRA	Partial evidence	Lower Hutt, New ZealandHQ checked Sep 19, 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 19, 2026
8	March Cato	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	51-200	36 contacts →
	Indirect evidence “March Cato is an award winning, Auckland based, Civil Engineering construction company specialising in tunneling, open cut trenching, shaft construction and sheet piling for…” Source: RevenueBase Database · checked Sep 19, 2026
9	Westroads NZ	Indirect evidence	Hokitika, New ZealandHQ checked Sep 19, 2026	51-200	21 contacts →
	Indirect evidence “Westroads is owned by the Westland District Council and provides civil construction, utilities maintenance, roading maintenance and reserves maintenance from Greymouth to Haast on…” Source: RevenueBase Database · checked Sep 19, 2026
10	Devan Plastics Limited	Partial evidence	Tauranga, New ZealandHQ checked Sep 19, 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 19, 2026
11	Waipa Civil LTD	Indirect evidence	Cambridge, New ZealandHQ checked Sep 19, 2026	51-200	18 contacts →
	Indirect evidence “Civil construction firm Waipa Civil assists local councils and construction companies throughout the greater Waikato region and Bay of Plenty area.” Source: RevenueBase Database · checked Sep 19, 2026
12	Sitecare	Indirect evidence	Taupo, New ZealandHQ checked Sep 19, 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 19, 2026
13	Utilities Infrastructure NZ	Indirect evidence	Rolleston, New ZealandHQ checked Sep 19, 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 19, 2026
14	Projectmax LTD	Strong evidence	Auckland, New ZealandHQ checked Sep 19, 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 19, 2026
15	SWE Southern Water Engineering	Partial evidence	Blenheim, New ZealandHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial 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 19, 2026
16	Bellcon Limited	Strong evidence	Ruakaka, New ZealandHQ checked Sep 19, 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 19, 2026
17	Agile Infrastructure Services Limited	Strong evidence	Auckland, New ZealandHQ checked Sep 19, 2026	11-50	11 contacts →
	Strong evidence “Agile Infrastructure Services is a specialist civil construction contractor based in Auckland.” Source: RevenueBase Database · checked Sep 19, 2026
18	Drainways Contracting LTD	Partial evidence	Twyford, New ZealandHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “We provide for the health and well being of communities through the construction of fresh water and drainage systems that are built to last” Source: RevenueBase Database · checked Sep 19, 2026
19	Olsen Welding Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “Olsen Welding Limited is a construction company based out of 202 James Fletcher Drive, Otahuhu, Auckland, New Zealand.” Source: RevenueBase Database · checked Sep 19, 2026
20	Innoflow Technologies NZ Limited	Indirect evidence	Dairy Flat, New ZealandHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Wastewater treatment, Community Pressure Sewers, Wastewater Design, Build & Operate.” Source: RevenueBase Database · checked Sep 19, 2026
21	DEECO	Indirect evidence	Alicetown, New ZealandHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Founded in 1938, Deeco Services Limited combines the best from tradition, experience and modern management.” Source: RevenueBase Database · checked Sep 19, 2026
22	Mason Engineers NZ LTD	Indirect evidence	East Tamaki, New ZealandHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect 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 19, 2026
23	RZG Construction	Partial evidence	Mount Maunganui, New ZealandHQ checked Sep 19, 2026	51-200	9 contacts →
	Partial evidence “Based in Tauranga, RZG Construction is a multi disciplinary construction company offering services to the infrastructure, commercial and residential, sectors.” Source: RevenueBase Database · checked Sep 19, 2026
24	Northwater	Indirect evidence	Auckland, New ZealandHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “NorthWater specializes in watermain installation, Butt welding and Electrofusion welding, Pressure Testing, Ozone Pipeline Disinfection, Chlorination's, Pipeline Connections and…” Source: RevenueBase Database · checked Sep 19, 2026
25	Construction Contracts LTD	Strong evidence	Taita, New ZealandHQ checked Sep 19, 2026	11-50	8 contacts →
	Strong evidence “We are civil construction contractors principally undertaking project work for Wellington Water.” Source: RevenueBase Database · checked Sep 19, 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 contractors. 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 contractors.
Partial evidence: Its own public description names part of water infrastructure contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water infrastructure contractors. 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 75 water infrastructure contractors based in New Zealand

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Water infrastructure contractors based in New Zealand at a glance

As of Sep 19, 2026

41.2%Verified-email coverage

20.6Average contacts per company

11-50Median size (employees)

28.0%Largest-city concentration · Auckland

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 75 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 contractors, 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 contractors”. 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 contractors), 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 contractors, 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, 637 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 19, 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 contractors, 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 contractors are there based in New Zealand?

RevenueBase identified 75 water infrastructure contractors 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?

Hynds Pipe Systems Limited, headquartered in Auckland, tops this list with the largest team on record.

Which city has the most water infrastructure contractors?

Auckland leads with 21 headquartered companies, followed by Christchurch (6) and Wellington (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 637 verified decision-maker contacts tracked across these 75 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 19, 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.