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Both at home and abroad, we successfully deliver water resource management and water supply projects to a wide range of satisfied clients, with a particular focus on achieving sustainable development in an environmentally-friendly way.

Our position of leadership in our sector is based on over eight decades of experience, and we are acknowledged specialists in the design, procurement and management of large-scale projects. 

With a completely client-centric approach to our work, we are ruthless in our pursuit of the most effective solutions at optimum cost and within highly challenging timeframes.



Leixlip Water Treatment Plant Expansion - Stage 5, Ireland

This project involved the Upgrading and Expansion of the Leixlip Water Treatment Works to 250 MLD capacity

Water Services Strategic Plan and Environmental Assessments (SEA & AA), Ireland

Nicholas O'Dwyer Ltd. are currently preparing the Water Services Strategic Plan on behalf of Irish Water.  This high level Plan defines Irish Water's strategic objectives in the delivery of water and wastewater services over the next 25 years.



Gavin Reilly

+353 1 296 9001


In the past decade we have:

-Provided water supply engineering to authorities serving over 5 million consumers

-Engineered water sector projects with a construction value of over 1 billion euro

-Managed individual projects with a capital spend of over €200 million

-Supplied over a million man-hours of engineering services to the water industry

-Worked in over 20 countries throughout the developing world

-Tendered and administered projects under Irish Government, FIDIC and EU conditions of contract.