Except as provided in 40 CFR 403.7 and 403.13, any source that introduces wastewater pollutants into a POTW must comply with part 403 and achieve the following pretreatment standards:
Pretreatment Standards \1\------------------------------------------------------------------------
Maximum
Regulated parameter Maximum monthly
daily avg.------------------------------------------------------------------------Arsenic......................................... 84 72Cadmium......................................... 71 26Chromium........................................ 25 14Copper.......................................... 23 14Lead............................................ 57 32Mercury......................................... 2.3 1.3Silver.......................................... 13 8Titanium........................................ 60 22Zinc............................................ 82 54------------------------------------------------------------------------\1\ Micrograms per liter (ppb)