Contract Win worth CDN$4m

12 June 2012

Embargoed until 07:00

Hydro International plc

("Hydro" or the "Group")

US Wastewater Contract Win worth CDN$4m

Proprietary grit removing technologies selected by Bonnybrook WWTP in Calgary, Canada

Hydro International (AIM: HYD), a leading provider of environmentally sustainable and innovative products for the control and treatment of water, announces that its US Wastewater division has won its largest ever grit removal system contract, worth CDN$4m. The contract is for the Bonnybrook WWTP in Calgary, Alberta, Canada. Revenue from the order is expected to be recognised in 2013 and 2014 as the project is delivered.

To address the problem of grit removal from incoming flows to the municipal wastewater treatment works, Hydro will supply an integrated grit removal system comprising proprietary vortex separation products, including its Headcell, SlurryCup and Grit Snail products. The Bonnybrook plant is one of three plants which serve more than a million residents in Calgary, and has a peak capacity of 368 mgd (1,393 m3/d). The Hydro grit removal system is scheduled to begin operation in 2014.

Steve Hides, CEO of Hydro International commented: "Hydro is a market leader in advanced grit removal technologies, and we are very pleased to have secured such a significant order for our innovative and sustainable solutions, based on our proprietary non-mechanical vortex technologies. We attribute our on-going success in the US Wastewater market to the strength of our product offering to customers and the exceptional quality of our network of independent wastewater sales representatives.

"Our commitment to advancing best practices and thought leadership while providing robust solutions continues to be embraced by Consultants and Municipalities that strive to provide optimal results for their communities. The Group is driving a number of initiatives that will serve to strengthen our customer focused approach; we look forward to being able to update on this and the further implementation of the Group's growth strategy."

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About Hydro International

Hydro International plc (AIM:HYD) (Hydro) is a global supplier of environmentally sustainable products and innovative solutions for the control and treatment of stormwater, wastewater and combined sewer overflows. Hydro's products use a range of advanced technologies including award-winning advanced vortex technology. Headquartered in Clevedon, North Somerset, Hydro also operates in the UK from offices in Ely, Cambridgeshire as well as across the US from bases in Portland, Maine and Hillsboro, Oregon. The Group has a growing presence outside of its core US and UK markets in Ireland, Egypt, Middle East, Mexico, European Union, Malaysia, Singapore, Japan, Korea, Australia and New Zealand.

Please visit the website for further information www.hydro-int.com