Company lists · Data refreshed September 2026

Top 25 On-site water treatment system contractors based in New Zealand

Name: On-site water treatment system contractors based in New Zealand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 61 companies tracked

RevenueBase identified 61 company matches for on-site water treatment system contractors associated with New Zealand as of September 2026 and tracks 529 professional contacts across them, including 221 with verified work emails. Auckland is the largest hub.

This list covers company matches for on-site water treatment system contractors 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 17, 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 17, 2026 How this list was built

61Companies

529Contacts tracked

221Verified emails

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

The 25 largest on-site water treatment system contractors based in New Zealand

Ranked by team size

Top 25 of 61 company matches for on-site water treatment system contractors based in New Zealand, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Filtec LTD	Exact match	Mt Wellington, New ZealandHQ recorded Sep 17, 2026	51-200	86 contacts →
	Exact match “FILTEC - Making Water Safer Experts in supplying and servicing water and wastewater treatment systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Just Water	Exact match	Auckland, New ZealandHQ recorded Sep 17, 2026	51-200	65 contacts →
	Exact match “Just Water is the recognised industry leader in providing drinking-water and filtration systems for the workplace and at home.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Watersmart	Exact match	Auckland, New ZealandHQ recorded Sep 17, 2026	11-50	26 contacts →
	Exact match “Trusted, Innovative, Water Solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Devan Plastics Limited	Exact match	Tauranga, New ZealandHQ recorded Sep 17, 2026	51-200	18 contacts →
	Exact match “We manufacture and design Water and Waste Water Solutions for the Urban, Rural and Commercial Market.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Visentia	Exact match	Auckland, New ZealandHQ recorded Sep 17, 2026	11-50	16 contacts →
	Exact match “At Visentia, we are proud to be a kiwi company staffed by water chemistry experts with local and global experience offering a range of products and services to help New Zealand…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Sitecare	Exact match	Taupo, New ZealandHQ recorded Sep 17, 2026	51-200	15 contacts →
	Exact match “For over 25 years, SiteCare has been a prominent national leader in providing a diverse range of environmental and industrial services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Innoflow Technologies NZ Limited	Exact match	Dairy Flat, New ZealandHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “Wastewater treatment, Community Pressure Sewers, Wastewater Design, Build & Operate.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Wavelength Water LTD	Exact match	East Tamaki, New ZealandHQ recorded Sep 17, 2026	11-50	9 contacts →
	Exact match “Wavelength Water provides water treatment expertise and complete systems to achieve the water quality you need.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	DEECO	Exact match	Alicetown, New ZealandHQ recorded Sep 17, 2026	11-50	9 contacts →
	Exact match “Founded in 1938, Deeco Services Limited combines the best from tradition, experience and modern management.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Mason Engineers NZ LTD	Exact match	East Tamaki, New ZealandHQ recorded Sep 17, 2026	11-50	9 contacts →
	Exact match “Mason Engineers (NZ) Limited is a company whose name has been synonymous with engineering in New Zealand for more than seventy years.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Aqua Works	Exact match	Warkworth, New ZealandHQ recorded Sep 17, 2026	1-10	7 contacts →
	Exact match “STOP being the Filter, get an Aqua Works Filter, water you can trust for life.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Oasis Clearwater Environmental Systems	Exact match	Rolleston, New ZealandHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “Oasis Clearwater are a leading manufacturer of onsite wastewater treatment systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Spring Water Solutions	Exact match	Auckland, New ZealandHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “In today’s world, access to healthy, clean water is more important than ever.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	FPC NZ	Exact match	Mount Maunganui, New ZealandHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match “Filtration & Pumping Commercial (FPC) is a New Zealand–based specialist in commercial pool, aquatic, and water treatment systems, delivering design, supply, installation…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Austin Bluewater	Exact match	Christchurch, New ZealandHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match “We are a proven leader with over 25 years hands-on experience designing and manufacturing waste water treatment systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Chemfeed	Exact match	Auckland, New ZealandHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match “Chemfeed are specialists in Chemical Dosing and Disinfection Systems.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Allflow NZ	Exact match	Richmond, New ZealandHQ recorded Sep 17, 2026	1-10	5 contacts →
	Exact match “Allflow has been serving the top of the South since the 1960s, including waste water services from 1977.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Franklin Water	Exact match	Pukekohe, New ZealandHQ recorded Sep 17, 2026	1-10	4 contacts →
	Exact match “We service clients in a vast area, including Franklin, Drury, Ardmore, Papakura, Clevedon, Kawakawa Bay, Maraetai, Beachlands, Whitford, Ramarama, Bombay, Mercer, Glenbrook…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Apex Water LTD	Exact match	Timaru, New ZealandHQ recorded Sep 17, 2026	51-200	3 contacts →
	Exact match “Apex Water promises guaranteed environmental performance and that makes us leaders in water & wastewater treatment.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Atlan Stormwater NEW Zealand	Exact match	Mangere, New ZealandHQ recorded Sep 17, 2026	51-200	3 contacts →
	Exact match “At Atlan Stormwater, we draw on more than 45 years’ experience in the design, testing and manufacture of water treatment systems that are utilised in over 45 countries.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Aqua-K NZ Limited	Exact match	Pukekohe, New ZealandHQ recorded Sep 17, 2026	1-10	3 contacts →
	Exact match “Specialising in end-to-end wastewater management, we offer bespoke solutions that span from initial concept to fully commissioned plants.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Ecocycle	Exact match	Tauranga, New ZealandHQ recorded Sep 17, 2026	1-10	3 contacts →
	Exact match “Ecocycle is your go-to source for clever, efficient, and affordable onsite wastewater treatment solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Biolytix Limited	Exact match	Auckland, New ZealandHQ recorded Sep 17, 2026	11-50	2 contacts →
	Exact match “Manufacturers of the Biolytix Wastewater Treatment System.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Ionic Watercare	Exact match	Sockburn, New ZealandHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match “Ionic Watercare is a company based out of New Zealand.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Smart Water & Irrigation LTD	Exact match	Whangarei, New ZealandHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match “About Smart Water & Irrigation Ltd Our vision at Smart Water & Irrigation is to provide a professional service to exceed our clients expectations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “on-site water treatment system contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 61 on-site water treatment system contractors based in New Zealand

See the full list, filter by size, metro and specialty, and access 221 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

On-site water treatment system contractors based in New Zealand at a glance

As of Sep 17, 2026

41.8%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

32.8%Largest-city concentration · Auckland

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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

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 “on-site water treatment system contractors” 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 221 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 17, 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 “on-site water treatment system contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many on-site water treatment system contractors are there based in New Zealand?

RevenueBase identified 61 company matches for on-site water treatment system contractors 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?

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

Which city has the most on-site water treatment system contractors?

Auckland leads with 20 company records, followed by Hamilton (4) and Christchurch (3).

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 221 professional contacts with verified work emails tracked across these 61 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 61 on-site water treatment system contractors based in New Zealand. Start with a free account, no credit card.

Download this list →

Related lists

On-site water treatment system contractors 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 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.