I recently reviewed this- but I had just set them up- and had not experienced them yet.  I now give it one start- as after just using it twice, ( we had a very rainy summer, so did not need to use eserve supply) the third time I attempted to get water from faucet - it broke.  Meaning the tap that opens and closes it completely snapped on both ends and is now useless. I then tried to access water from hose feature and that is also not working. And yes, there is water in the barrel. 
I am now going to have to spend time and extra money on a new brass tap - hopefully they are all a standard size. It is annoying and I would not buy this again without a parts guarantee of some sort.