Polypropylene barrels?
 

Anyone know where I can get one cheap? I need one for an RO system in the works. Thanks

You can sometimes get them from a carwash or a cola bottling plant.

Check this out. I don't know if it qualifies as cheap but it sure looks nice.
Tamco® Self Supporting Polyethylene Tanks With Spigots - US Plastic Corporation
And you can see the set up ( well, at least the way it looks ) here
Not mine though.
HTH,
Rafo

Another place is to find out where your school busses are washed. I paid $10 each for my 55 gallon drums, they came from a school bus wash rack........DC

thanks guys

I found a bunch of barrels locally for cheap, here's two links on craigslist:
http://minneapolis.craigslist.org/hsh/1007764664.html
http://minneapolis.craigslist.org/grd/1029498912.html

I have family in St. Croix. I am sure they would pick some up and hold them if I asked.

Dan,

I dont know if these are polypropylene, but I found them on craigs list under free stuff

free 55 gal. drums at churchill tire in northfield 517 water st. south.