Company lists · Data refreshed November 2026

Top 25 Wastewater infrastructure engineering firms based in Ireland

RevenueBase identified 78 company matches for wastewater infrastructure engineering firms associated with Ireland as of November 2026 and tracks 2,130 professional contacts across them, including 994 with verified work emails. Dublin is the largest hub.

This list covers company matches for wastewater infrastructure engineering firms associated with Ireland, 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 November 6, 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 Nov 6, 2026 How this list was built
78Companies
2,130Contacts tracked
994Verified emails
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The 25 largest wastewater infrastructure engineering firms based in Ireland

Ranked by team size
Top 25 of 78 company matches for wastewater infrastructure engineering firms based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAthenry, IrelandHQ recorded Nov 6, 2026201-500383 contacts →

Exact match

“Coffey is a family-owned civil engineering-led company operating in every major construction sector throughout Ireland and the UK.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSandyford, IrelandHQ recorded Nov 6, 2026201-500254 contacts →

Exact match

“Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDundrum Road, IrelandHQ recorded Nov 6, 2026501-1,000150 contacts →

Exact match

“Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCastlebar, IrelandHQ recorded Nov 6, 202651-200131 contacts →

Exact match

“Shareridge is a dynamic, modern and innovative civil engineering solutions specialist.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSligo, IrelandHQ recorded Nov 6, 202651-20094 contacts →

Exact match

“Jennings O’Donovan is a multidisciplinary consulting engineering firm specialising in renewable energy, water supply, wastewater treatment and in the provision of planning and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLeixlip, IrelandHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“Cully Ltd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDonegal Town, IrelandHQ recorded Nov 6, 202651-20066 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCastleisland, IrelandHQ recorded Nov 6, 202651-20061 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBlackrock, IrelandHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“EirEng Consulting Engineers is a firm of highly experienced and motivated Civil and Structural Design Engineers with offices in Ireland and the UK, dedicated to providing cutting…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCastlebar, IrelandHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Established in 2003, we are an award winning design focused civil, structural, geotechnical and water engineering practice.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchKilheffernan, IrelandHQ recorded Nov 6, 202651-20023 contacts →

Exact match

“Introduction Glas Civil Engineering Ltd was founded in 2013 with the mission of delivering top-quality service to our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchTullamore, IrelandHQ recorded Nov 6, 202651-20021 contacts →

Exact match

“MEICA design and build experts: Molloy Environmental Systems, is a leader in the design, manufacture and install of wastewater treatment systems, pumping stations, and precast…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLongford, IrelandHQ recorded Nov 6, 202651-20019 contacts →

Exact match

“Ireland's Best-rated Domestic & Commercial Drainage and Environmental Company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAthenry, IrelandHQ recorded Nov 6, 202651-20018 contacts →

Exact match

“Coftec design, build, install & commission innovative, customised, engineering solutions for the water services industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCork, IrelandHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“JODA Engineering Consultants was established in 1961 and is considered one of Ireland's most prestigious engineering firms in the country.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLimerick, IrelandHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchDublin, IrelandHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Doherty Finegan Kelly (DFK) Consulting Engineers are established Engineering Consultants and provide a comprehensive range of consultancy services specialising in all aspects of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchCork, IrelandHQ recorded Nov 6, 202651-20013 contacts →

Exact match

“McGinty & O’Shea Ltd.(Building & Civil Engineering Contractors) operates across the many diverse sectors of the Irish construction industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLimerick, IrelandHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Civil Engineering Company who specialize in Earthworks, In-situ Concrete, Kerbing, Drainage, Ducting, Watermains & Water Treatment Works, Roadworks & Building Construction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDublin, IrelandHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“For over 20 years bioCycle™ has been at the forefront of the wastewater industry in Ireland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNaas, IrelandHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“A Consultancy of Chartered Engineers coupling Civil and Marine construction experience with innovative design excellence.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSligo, IrelandHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“Consulting Civil, Structural & Traffic Engineers with expert knowledge in the fields of - Economic, sustainable development - Traffic Engineering - Road Safety Auditing (RSA)- RTA…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchIrelandHQ recorded Nov 6, 202651-2009 contacts →

Exact match

“J.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchIrelandHQ recorded Nov 6, 2026501-1,0008 contacts →

Exact match

“Over the past 55 years, Murphy Ireland has built a reputation for quality and excellence, offering industry-leading services in transportation, infrastructure, energy, structural…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchYoughal, IrelandHQ recorded Nov 6, 20261-107 contacts →

Exact match

“The practice was founded in 1987 by David Kelly.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 78 wastewater infrastructure engineering firms based in Ireland

See the full list, filter by size, metro and specialty, and access 994 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Wastewater infrastructure engineering firms based in Ireland at a glance

As of Nov 6, 2026
46.7%Verified-email coverage
27.3Average contacts per company
11-50Median size (employees)
11.5%Largest-city concentration · Dublin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
27
51-200
16
201-500
3
501-1,000
3

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 78 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 Ireland whose business descriptions match “wastewater infrastructure engineering firms” 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 994 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 November 6, 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 “wastewater infrastructure engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many wastewater infrastructure engineering firms are there based in Ireland?

RevenueBase identified 78 company matches for wastewater infrastructure engineering firms associated with Ireland as of November 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?

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

Which city has the most wastewater infrastructure engineering firms?

Dublin leads with 9 company records, followed by Cork (4) and Kilkenny (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 994 professional contacts with verified work emails tracked across these 78 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 November 6, 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 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.