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GA O’Neill Engineering Ltd
Our Services
OUR SPECIALISED PRODUCT
Bridge Clarifier Trench Brush
What we do
Comprehensive Engineering Solutions, Manufacture, Repairs and Maintenance
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Comprehensive Engineering Solutions
GA O’Neill Engineering Ltd., located in the South East, is renowned for its expertise in light and precision engineering services. The company specializes in servicing and support for Waste Water Treatment Plants, offering tailored solutions to meet the needs of this critical industry. Founded by Gerry O’Neill, who brings over 30 years of experience in engineering, GA O’Neill Engineering has earned a strong reputation for quality, reliability, and technical skill. Co-director Angela O’Neill oversees the company’s administrative and financial operations, ensuring seamless management and customer satisfaction.
Trusted Contractors for Local Authorities
GA O’Neill Engineering works closely with Wicklow, Carlow, and Kildare County Councils, delivering high-quality onsite repairs and offsite design and fabrication services from its fully equipped workshop. As registered contractors for Uisce Éireann (Reg. No. 754), the company provides a comprehensive range of services, including custom projects, machine and equipment design, fabrication, ongoing maintenance, preventative maintenance, and troubleshooting repair services.
With extensive practical knowledge, decades of experience, and a robust stock of spare parts, GA O’Neill Engineering ensures quick assessments and efficient repairs, minimizing downtime for clients. Whether it’s one-off projects or ongoing maintenance contracts, the company is dedicated to delivering reliable engineering solutions that meet the needs of local authorities and businesses.

Focus on value
At all times the focus is on delivering value for customers. Working efficiently and effectively, each project is delivered on time and on budget. A lean structure means economical hourly rates but the focus is always focusing on providing a quality level of service.
Coverage throughout the South East of Ireland
Our Facilities & Equipment
The Engineering Workshop
GA O’Neill Engineering Ltd operates a fully equiped light and precision engineering workshop based in Shillelagh on the Carlow / Wicklow border. We have rigourous QC checks in place to ensure that all manufacturing meet the high standards that we set.
Milling machine & lathe facilities
Guillotine and folding press
ARC, CO2, TIG static welder
Mobile generator welder
Pipe bender
Plasma profile cutters
Plate roller
Pipe Roller
Gas escape monitor kit
Mobile Van Unit
We operate a fully equipped mobile van unit for both quick response emergency call out or for our preventative maintenance programmes. The van can rapidly cover the following area as required.