Why do they say not to water your vegetables with reclaimed water?

Question

Why do they say not to water your vegetables with reclaimed water?

Answer 1

Who is saying that? current recommendations are to use "gray" (kitchen and bath, but not toilet) water for lawns and gardens.

Answer 2

If by "reclaimed" water, you mean processed/treated water from septic tanks, then it's perfectly fine.  In fact, everyone here has sprinklers which automatically go on once or twice a day, to use the processed water from the septic tanks.  I was told it's even safe to drink, but I'm sticking to my Brita water pitcher:)