Ed. Note: The Mulch is participating in Blog Action Day 2010, an initiative led by Media Consortium member Change.org that asks bloggers around the world to publish posts on the same issue on the same day. This year's topic is water.

Last week, rivers in Hungary ran red with toxic sludge, creating the perhaps most powerful image of water contamination possible. Imagine, for a second, if every chemical leaching into waterways in this country had such a brilliant hue. What color would our water be?