I have heard that also, crazy!!!! I do think everyone should try to do what they can, just trying to say that one 55 gallon drum is not going to do much. My mom lives in town and loves, wait LOVES plants. She is always trying to give me some or give me her seeds, my rule is "If it can't be eaten then it is not worth the water".
Some people don't realize the water they have. My tank is 10k gallons, for some months I am fine, but in bad months (April-October) I have to pay to have water delivered. It is $75 - $90 for 1.5k gallons. Do you know how long 1.5k gallons will last for a family of 4 (2 small kids), dogs, cats and chickens? I try my best to make it last a month. Yes, "if it is yellow, it is mellow" is a rule in the summer. Next time you(as in anyone, not talking abut bnjrob directly) get your water bill, check out how many gallons you use. If you have kids would love to know what you use.
My exception to the "if it can't be eaten", I mean everyone needs an exception
, is my 4 Orchids, they actually don't use much water, but are my eye candy.