aQuelle Water is getting suspicious (bad smell/taste)

I have purchased several 5l bottles, from Checkers on Jean Avenue and more and more I am coming across this foul smelling (like sewage or a drain-like scent) and horrible tasting water. Please do not reply with your generic contact us on Facebook and the website story. Can you just reply with the reason for this nasty water. aQuelle is my favourite because it has retained consistency and not had bad publicity like Valpre and other brands. What is the reason for this horrible tasting water??? Should we be worried? Should we probe for an investigation into whether or not is it in fact Natural Spring Water? Please reply with an answer and not the generic, detached response