Great...now tell me how those pollutants got in the water. I get how they are getting in the well. Do they just magically appear, or is it because those pollutants are being spread on the land like frosting? Do they make it to the water systems because we have done things to prevent it, or because we have tilled up every grass water way, grass buffer, stand of trees, and anything else to plant a few more acres of corn?
Hog manure is no better than any other chemical, just because it is less concentrated, just means they put more on the land to compensate.
It also says because of the voids in the karst etc, it makes it easier for surface pollutants to make it into aquafers and wells, sure it is going to be the shallow wells first, but eventually those deep wells will be polluted as well, especially when water finds a route that is direct. Not to mention that our rivers, streams and Lakes are cesspools because of it.
Yes the deeper the well the better, but that doesnt exactly mean there is not an issue. As I said if it is so safe, go drink it, bath in it, live in it. If they are so great why do so many buidings get built next to someone else than in the actual owners back yard. If its not an issue, what is our water so polluted and getting worse, even with the use of more manure than chemicals, it has only accelerated the pollution.
Why do we treat human waste, and cover the ground with animal waste like it is somehow not the same thing. Dumping the amount of hog manure on the land in Iowa is the same thing if we took the entire population of the USA and just spread their waste in only Iowa right on the land without treatment. Would anyone want to live here, if that was the case? No! But it is somehow ok that we do that with a similar amount of hog waste.
50M hogs in Iowa is the equivalent of around 500M people.