There is someone in Ontario who sells food grade drums that can be used for rain barrels. He advertises on craigslist. I haven't checked them out though.

http://inlandempire.craigslist.org/for/2109856121.html
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Message: 3
Date: Mon, 20 Dec 2010 10:19:16 -0800
From: Davey <davey.creates@gmail.com>
To: lapg@arashi.com
Subject: [Lapg] rain barrels
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anyone know where to get food-grade plastic drums? i really wish i hadn't
procrastinated on finding them before the rains...

let me know thanks
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