Driveway carwashes are starting to pop up. How should I handle this?

I'm not one who likes to stir up any kind of contention. I'm usually pretty calm and reserved, even when faced with adversity and challenging viewpoints. But, boy, oh, boy, seeing parking lot/charity carwashes sure do drive me bonkers. Seeing the hoses shooting out endless streams of water, and the soapy, dirty water running into sewers is enough to make me want to scream. And, such fundraisers are starting to pop up more and more, at least in the Northeast, that is. From school fundraisers to ones held in church parking lots, the nicer weather is proving to be perfect for such environmentally-unfriendly events. So, as the editor of the wonderful Professional Carwashing & Detailing magazine, I do my best to let others know of my disdain. With children on the other hand, it's not so easy. I have no problem telling an adult that what they're doing can be harmful to the environment. But, I don't want to be a complete killjoy to children who are simply trying to raise a few dollars. As the warmer Springtime days approach, and summer looms around the corner, I wonder what I will do when I hear someone I know is hosting or helping with a carwash fundraiser. Hopefully, I will represent my position at this magazine, and the industry in a respectable tone, and also convince a few to change their fundraising methods.