Co. Kildare

Osberstown Water Treatment Plant


ByrneLooby are the lead civil design team working to deliver a €12 million upgrade of the existing Water Treatment Plant at Osberstown in Co. Kildare. The upgrade will see the current capacity of 80,000PE (Population Equivalent) increase to 130,000PE and will enable it to comply with current legislation.

The role of ByrneLooby is to design the civils work for the upgrade of the main plant as well as the sludge treatment facility. The current plant was commissioned in 2001.

The contract was initially designed for conventional procurement but was later tendered as a Design Build contract. Although there was a requirement to adhere as closely as possible to the concept design, our innovation and vision solved many issues that arose during the design and build phase.

The biggest structure on the site is the anoxic/anaerobic water tank with a total footprint of 40m X 68m. Due to the design requiring fewer internal partitions, it was necessary that the tank roof be designed in order to span longer distances. The large and flat surface area of the tank also presented a problem for roof drainage. These constraints prompted us to examine a precast roof solution and a bespoke solution for gulley pots to address the drainage issues on the roof, which have both proved very effective.

The design and build environment on this project is challenging and demanding and we have developed and maintained good client relationships through a number of initiatives including timely delivery culture along with regular conversations to identify the client’s priorities.



“The extension to the existing Water Treatment Plant at Osberstown was one of the first projects I worked on when I joined ByrneLooby. ByrneLooby acted as the Civil Designer working directly for the Civils Contractor on this Design and Build project. This challenging project involved the design of numerous reinforced concrete, steel and masonry structures as well as pipeline, roads and drainage design. One of the most enjoyable aspects of this project was liaising with the Contractor to ensure our designs were robust, readily constructible and represented a cost effective solution.”

Stephen, Graduate Structural Engineer


Project Photos