1994 - Winner of the Norsk Hydro (UK) Ltd Award for outstanding contributions to water quality improvement and the enhancement of knowledge and awareness about water quality.

1997 - Hydro International's Swirl-Cleanse™ Process won the inaugural Ken Roberts Award given by CIWEM for “technical innovation in the water industry”.

1998 – Winner of the DTi Smart Award

2000 - Millennium Product Status awarded to the Hydro-Jet® Screen.

2003 - Finalist in the International Markets Award.

2003 – Winner of the IWEX Innovation Awards for “Contributions to Environment and Sustainability” award, sponsored by Defra.

2003 - Director of Innovation Prof. Bob Andoh is awarded IWEX's “Outstanding Individual” designation

2005 – Winner of the Environmental Business Journal’s Business Achievement Award for Excellence in Environmental Design

2005 - PlanExpo Product of the Show - Stormbloc® Stormwater System wins Best Exterior Building Product Award

2005 - PlanExpo Product of the Show - Stormbloc® Stormwater System wins Best Innovation Award

2007 – Winner of the Maine Technology Institute’s Development Award

2008 - Hydro International's US Wastewater Finance Manager Brian Harrell wins the WWEMA James C. Morris Award