Thank you, Mr. Chairman. Is there a threshold of contaminants that is acceptable, which would be considered acceptable for human consumption? Specifically dealing with water, what is the table at? Is there a standard? If you go above that standard, is it no longer safe or it is no longer deemed safe? A question in the area of testing, are they using other mammals, fish, ducks, animals that use the water quite frequently? Thank you, Mr. Chairman.