Gulp

@Daroru: I don't actually live here, but where I live, I imagine that the cow poop outweighs the dog poop by an order of magnitude.

@MadScientist: Thousands of pounds of solid waste really doesn't seem that much, especially when you consider that just one large power company in the US puts millions of pounds of sulfur dioxide into the atmosphere every year.

@Observing: Well, astronauts drink their own pee.

@e nelsonian: You should visit a water treatment plant.

@Melissa W.: Actually, I think they do a better job of removing stuff like this at the treatment plant than they do some other things, like drug residues.

@JoeB: I was think about this when we took our dogs to the park the other day and watched my wife picking up after her dog.

@danthro: As a matter of fact, I was working backwards through the comments and just left words to that effect in reply to a comment on the following day's image. This sign is really sort of a lie by omission, since it suggests that dog feces is a unique water supply contaminant, and that it isn't removed as part of the treatment process (well, mostly removed). Drugs, after all, aren't the only things that are flushed down the toilet. I think water treatment may well do a better job at removing urine and feces contamination that drug residues.

@Mortola: So they say. Not sure I believe it.