VANCOUVER, BRITISH COLUMBIA–(Marketwired – May 24, 2016) – International Wastewater Systems Inc. (“IWS” or the “Company”) (CSE:IWS)(FRANKFURT:IWI) is pleased to announce that CNNMoney.com today launched a feature article on IWS titled: ‘Clean Energy gets Dirty: Turning Sewage into Heat’.

The article by CNNMoney reporter Jacqueline Wattles provides an overview of IWS’s world-leading wastewater heat recovery technology including details from IWS projects in Canada and the United States.

The article can be accessed via direct link at: http://money.cnn.com/2016/05/24/technology/sewage-energy-sharc-wastewater-systems/index.html.

ON BEHALF OF THE BOARD

Lynn Mueller, Chairman and Chief Executive Officer

About International Wastewater Systems Inc.

International Wastewater Systems Inc. (CSE:IWS)(FRANKFURT:IWI) is a world leader in wastewater heat recovery. IWS systems recycle thermal energy from wastewater, generating the most energy efficient and economical systems for heating, cooling & hot water for commercial, residential and industrial buildings.

The CSE does not accept responsibility for the adequacy or accuracy of this release.