Company lists · Data refreshed September 2026

Top 25 Water infrastructure engineering firms based in Ireland

Name: Water infrastructure engineering firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 77 companies tracked

RevenueBase identified 77 water infrastructure engineering firms headquartered in Ireland as of September 2026 and tracks 3,949 professional contacts across them, including 1,735 with verified work emails. Dublin is the largest hub.

This list covers water infrastructure engineering firms 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

77Companies

3,949Contacts tracked

1,735Verified emails

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The 25 largest water infrastructure engineering firms based in Ireland

Ranked by team size

Top 25 of 77 water infrastructure engineering firms 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 infrastructure engineering 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	Ward And Burke	Partial evidence	Kilcolgan, IrelandHQ checked Sep 19, 2026	1,001-5,000	632 contacts →
	Partial 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
2	Glanua	Strong evidence	Galway, IrelandHQ checked Sep 19, 2026	201-500	417 contacts →
	Strong 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
3	EPS Group	Strong evidence	Mallow, IrelandHQ checked Sep 19, 2026	501-1,000	360 contacts →
	Strong 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
4	Coffey	Partial evidence	Athenry, IrelandHQ checked Sep 19, 2026	201-500	324 contacts →
	Partial evidence “Coffey is a family-owned civil engineering-led company operating in every major construction sector throughout Ireland and the UK.” Source: RevenueBase Database · checked Sep 19, 2026
5	Nicholas O'dwyer LTD	Strong evidence	Dublin, IrelandHQ checked Sep 19, 2026	201-500	284 contacts →
	Strong evidence “Nicholas O'Dwyer Ltd, Consulting Engineers, provide water engineering, environmental engineering and civil and structural engineering services to public and private sector clients.” Source: RevenueBase Database · checked Sep 19, 2026
6	Roughan & O'donovan	Partial evidence	Sandyford, IrelandHQ checked Sep 19, 2026	201-500	227 contacts →
	Partial evidence “Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
7	Fingleton White	Strong evidence	Portlaoise, IrelandHQ checked Sep 19, 2026	201-500	175 contacts →
	Strong evidence “Fingleton White is a leading provider of multidisciplinary engineering services, delivering innovative solutions to utility owners and large energy users across the Energy, Water…” Source: RevenueBase Database · checked Sep 19, 2026
8	Egis In Ireland	Partial evidence	Dundrum Road, IrelandHQ checked Sep 19, 2026	501-1,000	143 contacts →
	Partial evidence “Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: RevenueBase Database · checked Sep 19, 2026
9	Whitewater Group	Strong evidence	Naas, IrelandHQ checked Sep 19, 2026	201-500	131 contacts →
	Strong 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
10	Shareridge	Partial evidence	Castlebar, IrelandHQ checked Sep 19, 2026	51-200	106 contacts →
	Partial evidence “Shareridge is a dynamic, modern and innovative civil engineering solutions specialist.” Source: RevenueBase Database · checked Sep 19, 2026
11	CULLY	Indirect evidence	Leixlip, IrelandHQ checked Sep 19, 2026	51-200	91 contacts →
	Indirect evidence “Cully Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
12	Jennings O'donovan & Partners	Strong evidence	Sligo, IrelandHQ checked Sep 19, 2026	51-200	79 contacts →
	Strong evidence “Jennings O’Donovan is a multidisciplinary consulting engineering firm specialising in renewable energy, water supply, wastewater treatment and in the provision of planning and…” Source: RevenueBase Database · checked Sep 19, 2026
13	Source Civil LTD	Partial evidence	Donegal Town, IrelandHQ checked Sep 19, 2026	51-200	59 contacts →
	Partial evidence “Source Civil Ltd is a trusted leader in civil engineering, combining over 20 years of expertise with an unwavering commitment to innovation, integrity, safety, and quality.” Source: RevenueBase Database · checked Sep 19, 2026
14	Right Group	Strong evidence	Castleisland, IrelandHQ checked Sep 19, 2026	51-200	57 contacts →
	Strong 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
15	Cleantech Civils	Indirect evidence	Co Cavan, IrelandHQ checked Sep 19, 2026	51-200	44 contacts →
	Indirect evidence “P&S Civil Works was incorporated in 1968, our trading name is Cleantech Civils.” Source: RevenueBase Database · checked Sep 19, 2026
16	SDS Design Engineers	Strong evidence	Castlebar, IrelandHQ checked Sep 19, 2026	11-50	31 contacts →
	Strong evidence “Established in 2003, we are an award winning design focused civil, structural, geotechnical and water engineering practice.” Source: RevenueBase Database · checked Sep 19, 2026
17	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
18	Capcon	Partial evidence	Maynooth, IrelandHQ checked Sep 19, 2026	51-200	26 contacts →
	Partial evidence “Capcon Engineering are rainwater drainage and harvesting specialists providing design consultation and sub-contracting services on large-scale construction projects.” Source: RevenueBase Database · checked Sep 19, 2026
19	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
20	Glas Civil Engineering LTD	Partial evidence	Kilheffernan, IrelandHQ checked Sep 19, 2026	51-200	18 contacts →
	Partial evidence “Introduction Glas Civil Engineering Ltd was founded in 2013 with the mission of delivering top-quality service to our clients.” Source: RevenueBase Database · checked Sep 19, 2026
21	Coftec	Strong evidence	Athenry, IrelandHQ checked Sep 19, 2026	51-200	17 contacts →
	Strong evidence “Coftec design, build, install & commission innovative, customised, engineering solutions for the water services industry.” Source: RevenueBase Database · checked Sep 19, 2026
22	Kilgallen & Partners Consulting Engineers	Partial evidence	Portlaoise, IrelandHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Kilgallen and Partners perform civil and structural engineering services.” Source: RevenueBase Database · checked Sep 19, 2026
23	Conway Engineering	Partial evidence	Limerick, IrelandHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial 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
24	Mcginty & O'shea LTD	Partial evidence	Cork, IrelandHQ checked Sep 19, 2026	51-200	14 contacts →
	Partial evidence “McGinty & O’Shea Ltd.(Building & Civil Engineering Contractors) operates across the many diverse sectors of the Irish construction industry.” Source: RevenueBase Database · checked Sep 19, 2026
25	Conradh Construction	Strong evidence	Limerick, IrelandHQ checked Sep 19, 2026	11-50	14 contacts →
	Strong evidence “Civil Engineering Company who specialize in Earthworks, In-situ Concrete, Kerbing, Drainage, Ducting, Watermains & Water Treatment Works, Roadworks & Building Construction.” 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 engineering 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 infrastructure engineering firms.
Partial evidence: Its own public description names part of water infrastructure engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water infrastructure engineering 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 77 water infrastructure engineering firms based in Ireland

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Water infrastructure engineering firms based in Ireland at a glance

As of Sep 19, 2026

43.9%Verified-email coverage

51.3Average contacts per company

11-50Median size (employees)

7.8%Largest-city concentration · Dublin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 77 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 engineering 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 Ireland whose own description of what they do matches “water infrastructure engineering 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 infrastructure engineering 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 infrastructure engineering firms, 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, 1,735 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 engineering 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 infrastructure engineering firms are there based in Ireland?

RevenueBase identified 77 water infrastructure engineering firms 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?

Ward And Burke, headquartered in Kilcolgan Kilcolgan, tops this list with the largest team on record.

Which city has the most water infrastructure engineering firms?

Dublin leads with 6 headquartered companies, followed by Cork (4) and Naas (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 1,735 verified decision-maker contacts tracked across these 77 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.