A source of water pollutants which is not an industrial or municipal discharge from a discernible,
confined and discrete conveyance, such as pipe, ditch, or channel which is designed to emit
effluent into a water body. See POINT SOURCE. An example of a non-point source would be
municipal or agricultural runoff. Discharges from painting of bridges or other structures over or
near water are non-point sources, because there is normally not an intent to discharge into the
body of water.