Company lists · Data refreshed September 2026

Top 25 Water management companies based in Ireland

Name: Water management companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 56 companies tracked

RevenueBase identified 56 water management companies headquartered in Ireland as of September 2026 and tracks 4,180 professional contacts across them, including 1,977 with verified work emails. Naas is the largest hub.

This list covers water management companies headquartered in Ireland, 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

56Companies

4,180Contacts tracked

1,977Verified emails

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The 25 largest water management companies based in Ireland

Ranked by team size

Top 25 of 56 water management companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to water management companies: 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	Uisce Éireann Irish Water	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1,001-5,000	1,763 contacts →
	Indirect evidence “We are Uisce Éireann.” Source: RevenueBase Database · checked Sep 19, 2026
2	Ward And Burke	Indirect evidence	Kilcolgan, IrelandHQ checked Sep 19, 2026	1,001-5,000	632 contacts →
	Indirect evidence “Since its establishment, Ward & Burke has sought to develop and adopt the ideals and aspirations to civil engineering construction and currently delivers class leading, reliable…” Source: RevenueBase Database · checked Sep 19, 2026
3	Glanua	Partial evidence	Galway, IrelandHQ checked Sep 19, 2026	201-500	417 contacts →
	Partial evidence “Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build and deliver critical water and wastewater infrastructure across UK and…” Source: RevenueBase Database · checked Sep 19, 2026
4	EPS Group	Partial evidence	Mallow, IrelandHQ checked Sep 19, 2026	501-1,000	360 contacts →
	Partial evidence “EPS Group is an international water infrastructure specialist operating across the Republic of Ireland, the UK and Northern Europe.” Source: RevenueBase Database · checked Sep 19, 2026
5	Whitewater Group	Partial evidence	Naas, IrelandHQ checked Sep 19, 2026	201-500	131 contacts →
	Partial evidence “Whitewater Group is a multi-disciplinary engineering company with water at the heart of everything we do.” Source: RevenueBase Database · checked Sep 19, 2026
6	Shareridge	Indirect evidence	Castlebar, IrelandHQ checked Sep 19, 2026	51-200	106 contacts →
	Indirect evidence “Shareridge is a dynamic, modern and innovative civil engineering solutions specialist.” Source: RevenueBase Database · checked Sep 19, 2026
7	CULLY	Indirect evidence	Leixlip, IrelandHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “Cully Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
8	CSL	Partial evidence	Carlow, IrelandHQ checked Sep 19, 2026	11-50	63 contacts →
	Partial evidence “CSL is the number one service and maintenance provider to the water and wastewater sector.” Source: RevenueBase Database · checked Sep 19, 2026
9	Right Group	Partial evidence	Castleisland, IrelandHQ checked Sep 19, 2026	51-200	57 contacts →
	Partial evidence “At Right Group, our experienced team has collectively propelled us to the forefront as the leading provider of Electrical and Mechanical Engineering solutions in the water and…” Source: RevenueBase Database · checked Sep 19, 2026
10	Celtic Anglian Water	Partial evidence	Santry, IrelandHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial evidence “Celtic Anglian Water provides world class water and waste treatment services to Industrial and municipal clients across Ireland and the UK.” Source: RevenueBase Database · checked Sep 19, 2026
11	Culligan Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	n/a	40 contacts →
	Indirect evidence “At Culligan we are committed to creating a better, more sustainable world.” Source: RevenueBase Database · checked Sep 19, 2026
12	Campion	Indirect evidence	Thurles, IrelandHQ checked Sep 19, 2026	51-200	30 contacts →
	Indirect evidence “Campion is an Irish owned company that has been growing its operations since 1988.” Source: RevenueBase Database · checked Sep 19, 2026
13	SES Water Management	Strong evidence	Ennis, IrelandHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong evidence “SES Water Management provides decisive solutions to the sustainability challenges faced by modern businesses in the retail, industrial, construction and tourism sectors.” Source: RevenueBase Database · checked Sep 19, 2026
14	Aquachem DAC	Partial evidence	Loughrea, IrelandHQ checked Sep 19, 2026	11-50	19 contacts →
	Partial evidence “About Water Treatment experts with over 40 years technical experience.” Source: RevenueBase Database · checked Sep 19, 2026
15	Cantwell Electrical Engineering LTD	Partial evidence	Thurles, IrelandHQ checked Sep 19, 2026	51-200	18 contacts →
	Partial evidence “We are one of Ireland’s leading Water Treatment and Pumping Solutions providers.” Source: RevenueBase Database · checked Sep 19, 2026
16	Coftec	Partial evidence	Athenry, IrelandHQ checked Sep 19, 2026	51-200	17 contacts →
	Partial evidence “Coftec design, build, install & commission innovative, customised, engineering solutions for the water services industry.” Source: RevenueBase Database · checked Sep 19, 2026
17	Conway Engineering	Indirect evidence	Limerick, IrelandHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Conway Engineering have been in operation for over 40 years specialising in the design, manufacture and installation of mechanical and electrical engineering solutions to meet…” Source: RevenueBase Database · checked Sep 19, 2026
18	O'reilly Oakstown LTD	Indirect evidence	Oakstown, IrelandHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “O'Reilly Oakstown provides an environmentally responsible wastewater treatment solution for both homes and businesses.” Source: RevenueBase Database · checked Sep 19, 2026
19	Biocycle Wastewater Treatment Systems	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “For over 20 years bioCycle™ has been at the forefront of the wastewater industry in Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
20	Celtic Water Solutions	Partial evidence	IrelandHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Celtic Water Solutions is a leading provider of water treatment and hygiene solutions, offering a broad portfolio of products, services and expertise to support residential…” Source: RevenueBase Database · checked Sep 19, 2026
21	Industrial Water Management LTD	Partial evidence	Naas, IrelandHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “We provide professional water treatment, hygiene & purification services for commercial, industrial and healthcare environments.” Source: RevenueBase Database · checked Sep 19, 2026
22	Renewell Water	Partial evidence	Dundalk, IrelandHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “Founded in 2002, Renewell Water has been a trusted provider of healthy water solutions in Ireland for over two decades.” Source: RevenueBase Database · checked Sep 19, 2026
23	Nova Q LTD	Indirect evidence	Co. Dublin, IrelandHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Nova Q provide new and emerging, best available technologies and solutions to businesses on their environmental journey.” Source: RevenueBase Database · checked Sep 19, 2026
24	PWG Ireland	Partial evidence	Nenagh, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “PWG Ireland is your preferred B2B partner and one-stop-shop for all your Water Treatment requirements.” Source: RevenueBase Database · checked Sep 19, 2026
25	Ireland Waste Water	Partial evidence	Co Cork, IrelandHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “Ireland Waste Water is a private company that designs, manufactures, installs and services precast concrete wastewater treatment systems as well as its latest innovation - the…” 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 management companies. 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 management companies.
Partial evidence: Its own public description names part of water management companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water management companies. 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 56 water management companies based in Ireland

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Water management companies based in Ireland at a glance

As of Sep 19, 2026

47.3%Verified-email coverage

74.6Average contacts per company

11-50Median size (employees)

7.1%Largest-city concentration · Naas

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 56 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 management companies, 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 Ireland whose own description of what they do matches “water management companies”. 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 management companies), 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 management companies, and records with no verified work email. Companies headquartered outside Ireland 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, 1,977 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 management companies, 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 management companies are there based in Ireland?

RevenueBase identified 56 water management companies headquartered in Ireland 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?

Uisce Éireann Irish Water, headquartered in Dublin, tops this list with the largest team on record.

Which city has the most water management companies?

Naas leads with 4 headquartered companies, followed by Dublin (3) and Carlow (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 1,977 verified decision-maker contacts tracked across these 56 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.