His work resulted in an invitation to make a presentation at the Alcohol Interlock Symposium in California last month, where he won the inaugural Barry Sweedler Award. (Mr Sweedler, who passed away in 2009, was an internationally recognised advocate against impaired driving.)
Mr Waters said winning the award was "unreal".
"This is the first year the award has been given and to be the first recipient is an enormous honour.
"We are catching the drink-drivers but not addressing the underlying causes and not doing enough to stop those caught from repeating their behaviour."
Interlocks, to be introduced next year, will be a step towards ending of the "catch and release" approach to drink-drivers in New Zealand, he said.
An interlock is a device fitted to a vehicle that requires the driver to blow a sample of breath that is clear of alcohol before it can be started.
In giving Mr Waters the award, the Traffic Injury Research Foundation praised his "unwavering drive for knowledge on and understanding of the issue of impaired driving, promotion of evidence-based solutions such as alcohol interlocks, and his pursuit of change in the justice system".
Mr Waters is now an adviser to the drug courts programme and the interlocks working group, and continues to push the Government on several areas, including preventive detention as a sentencing option for recidivist drink-drivers, and mandatory drug tests for prisoners on community-based sentences.
Prisoners are subject to a self-reporting regime, which Mr Waters says is hardly a robust system. He is also setting up a charitable trust.