Glanua Group

Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build and operate critical water and wastewater infrastructure across Ireland and the UK. Glanua is passionate about solving today’s environmental challenges and delivering a decarbonised and sustainable world.

At Glanua, we design, build, operate, and maintain innovative water and wastewater solutions that protect the environment and support the people who depend on them. Sustainability is at our core — it’s why we innovate, how we work and the future we’re building.

We’re reimagining how the world treats water, using cutting-edge technology, smart design and fresh thinking to deliver cleaner, greener results for both industry and the public sector. With global ambitions and a track record of turning ideas into reality, we’re on an exciting journey of growth and impact.

Glanua are a partner to major water utilities in Ireland and the UK, including Uisce Éireann (formally Irish Water), Thames Water, Yorkshire Water, Affinity Water and Northern Ireland Water. In the industrial sector, their clients include prominent names such as ABP, Glanbia, Kerry Group, and other key players in the food and beverage, pharmaceutical, and distillery industries.

Core Values

Glanua lives by our core values, including Safety and Well-being, Innovation, Integrity, Collaboration, Courage, Agility, Accountability, Diversity, and Inclusion. These values guide our actions and decisions, ensuring that we uphold the highest standards in everything we do.

Our talented team comprises over 500 professionals across Ireland and the UK. Our UK office is headquartered in Hertfordshire and we also have offices in Reading, Sheffield, Northern Ireland, Galway and a manufacturing facility in Navan, Co Meath.

Sustainability

At Glanua, we understand the vital role we play in ensuring the delivery of safe and high-quality drinking water, as well as the proper treatment of wastewater before it is discharged into the environment. Committed to building today without compromising the environment for future generations, sustainability lies at the core of what we do. To strengthen our commitment, we have partnered with Earthshine, a leading sustainability consultant to develop our sustainability strategy that aligns with our values and ensures that every engineering solution we deliver contributes to a greener and more sustainable world.

Future growth

Glanua is on a growth trajectory, with ambitious plans to reach €400 million in the next five years. As we continue to expand our capabilities and service offerings, we remain committed to being at the forefront of sustainable engineering solutions, driving positive change in the water and wastewater infrastructure landscape in Ireland, UK, and internationally. Our growth is evident in the recent expansion of our team by over 150 people in 2023, bringing our total workforce to over 500 people. In 2024, we acquired O&M specialist company, Aqua Operations and in 2025, we acquired Anaerobic Digestion specialist company, Marches Biogas building a complete solutions provider in Water, Wastewater and Bioresources.