+ Treehugger investigates how many gallons of water it takes to make common objects.

+ CNET tips us off to reusable hemp tea bags. Ultra hippie vibe notwithstanding, we still think they’re pretty cool.

+ Earth2Tech follows a house that tweets its energy use.

+ GreenBiz tracks the $500M grants available for green job training, while Oakland’s Ella Baker center celebrates its first graduating class.

Both @charitywater and @watercharity are non-profits dedicated to building wells and providing clean drinking water to the nearly one billion citizens who go without every day.

@savethewater is a water research group focused on protecting water from toxic chemicals and pollutants.

@jdecock is president of Clean Water Action.

@campaignwater tweets about the global water crisis.

@waterca focuses on water challenges facing Canada.

These Twitterers are interested in broader water topics and, frankly, we just dig their tweets:

@climateandwater
@theallwaterblog
@waterthrift

If we missed you, leave us a note here and we’ll be happy to follow.

Earlier this year twitterers in more than 200 cities held face-to-face, offline festivals to raise money for charity: water, a non-profit dedicated to providing clean water to underdeveloped nations. The fundraiser generated $250K, which the charity used last week to drill wells in Ethiopia. Watch daily video updates of the project.

On a related (though admittedly frivolous) note, our friends and favorite rouge tinkerers over at MAKE devised a way to use Twitter to have your plants remind you when they need water. The plants even send a sweet note of thanks once you’ve soaked them. Although more of a novelty than a revolution, these high-tech tweets can help avoid wasted water—and dead plants.