Which would have its own environmental impact and monetary cost. I'm guessing this hypothetical water is coming from somewhere outside of the areas affected by the drought? So, somewhere north of Dallas, I guess, or east of Houston. 200 miles, at least, in either direction, at 10 MPG, is about $150 worth of gas ($75x2, since presumably the truck has to go both ways).
I doubt that's what happened, but maybe they made an effort to be sustainable and used grey water. Since Austin won't let you use grey water for gardening (which is a shame), it might also be illegal for washing, but it would be the more sustainable option, if the grey water comes from a source that is known to be safe and contains no chemicals that would effect the river or ground water.
First off, I'm happy to declare them as water-misusing criminals, since I hate ads. The reality is that selective cleaning of a sidewalk is just as bad as spraying me with a deadly neurotoxin that reprograms my brain to be sexually attracted to their web two point oh product.
But with that in mind, I can conceive of a universe where they cleaned a sidewalk (selectively) with some of their own water (perhaps purchased in bottle form at Sam's Club). And, although I hate ads, that's mildly cool. Without any facts to the contrary, hating them for blogging about it seems more like "Internet Outrage" than actual concern. FWIW.
I'm playing devil's advocate, mostly. The environmental holocaust that happens in Austin during SXSW makes this little faux paux look puny. One company painted a house green just for SXSW...painting is horrible for the environment. Generators were humming 24/7 all over downtown. Traffic was at a standstill from morning to night every day, with cars pumping out smog. Bottled water was being distributed everywhere at a disgusting rate. And all of it was in the service of companies pounding me in the face with ads at every turn.
I'm not the biggest fan of SXSW, if it wasn't apparent, and the environmental impact is one of the reasons I dislike it so much (but mostly the pervasive corporate agenda invading one of my favorite cities in such a vulgar manner).
I doubt that's what happened, but maybe they made an effort to be sustainable and used grey water. Since Austin won't let you use grey water for gardening (which is a shame), it might also be illegal for washing, but it would be the more sustainable option, if the grey water comes from a source that is known to be safe and contains no chemicals that would effect the river or ground water.