Drinking water varies from place to place, depending on the condition of the source water from which it is drawn and the treatment it receives, but it must meet EPA regulations. Even though our tap water supplies are considered to be one of the safest in the world,
water contamination can still occur. Which is these is NOT a likely source of contamination?
A)
Acid rain
B)
Sewage releases
Manufacturing processes, including heavy metals, cyanide
D)
Agriculture, including use of fertilizers, pesticides, livestock