100 mg/l [P] Phosphorus, 5 mg/l [Ag] Silver, 20 mg/l [Sb] Antimony, 20 mg/l [As] Arsenic, 20 mg/l [Ba] Barium, 20 mg/l [Be] Beryllium, 20 mg/l [Cd] Cadmium, 20 mg/l [Cr] Chromium, 20 mg/l [Co] Cobalt, 20 mg/l [Cu] Copper, 20 mg/l [Pb] Lead, 20 mg/l [Mn] Manganese, 20 mg/l [Ni] Nickel, 20 mg/l [Se] Selenium, 20 mg/l [Zn] Zinc, 20 mg/l [V] Vanadium, 20 mg/l [Tl] Thallium, 20 mg/l [Fe] Iron