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LARSEN is an Irish owned company with over 22-years experience and a unrivalled track record in water leak detection and watermain surveys in Ireland.

We provide a nationwide watermain leak detection service for all public sector bodies and private industry throughout Ireland.

We employ all local staff and have water leak detection technicians based throughout Ireland and Northern Ireland, including Dublin, Cork, Belfast, Galway, Limerick, Down, Fermanagh, Meath, Laois, Kilkenny, Kildare, Offaly, Cavan and Monaghan. This allows us to provide a reliable, efficient service to all of our clients, while supporting local jobs.

While our core business for the past 22-years is Leak Detection on water mains, we also provide a range of complementary services.


We provide a comprehensive service to each of our clients; from initial consultation - through to the contract services provided by our experienced engineers.

We have unrivalled experience and expertise that makes us the leading provider of leak detection and water conservation solutions in Ireland for the past 22 years.

We are committed to delivering a prompt professional service in all aspects of our business.

As evidence to our commitment to quality, we have been accredited to the following international standards:

• ISO 9001 Quality Management System
• ISO 14001 Environmental Management System
• OHSAS 18001 Health & Safety Management System

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