Yes Robert, they are still made. I found a few for sale on the net at various Aussie retailers and camping supplies shops. I would think you could source some in the USA as well. Search using "hessian water bag" "for sale". Maybe subsitute "canvas" for hessian.

The quality didn't look to the same standard as the old ones, from the photos at least.

I also wanted to find a big round hanging water bag with a hose and lid like we used to have. A stupid employee decided to stab it so it didn't last for more than a few weeks back decades ago.

Was good for storing maybe 15 to 20 litres and having relatively cool water to drink. Easy access too.