It should be designed for the purpose of enterprice and educations,
The true mystery is why 'challenge' and 'www.MonitorWater.org' are in different but similar typefaces?
URLs should be left out of logos, as such, and barely ever need the 'www' to remind us all that they are indeed addresses for the World Wide Web.
If you're set on that sort of look, I'd cut it down to something like this.
... which is almost exactly how it appears on the website above.
Promotion? Advertising? Why are children supposed to monitor water anyway?
Ok, you're driving down the hwy at 100 km/hr, that's like 70 mph for you Americans. Now you see a billboard ahead. Do you have time to read everything cramped together here? I don't think so. So it fails as a logo at large size.
Now, if you shrunk this down to 1"x1" is everything going to be legible when you print it on a business card, or silkscreen it on a shirt. I don't think so, therefore it fails as a logo at small size.
So true you said it twice.