Secondary Contaminants Chart SMCL, Sources to Drinking Water, and Health and/or Aesthetic Effects KEY: CASRN - Chemical mg/L Abstract milligram Services per liter Registry (same Number as ppm) – SMCL Secondary Maximum Contaminant ppm parts Level per million – – C.U. ppb Color parts Unit per billion – – T.O.N. Threshold odor numbers – To Chemical Source to Drinking SMCL convert SMCL Health and/or Aesthetic Effects Water (CASRN) for CCR, in CCR multiply units by Residue from water treatment Aluminum 0.2 mg/L 1000 200 ppb process: erosion of natural May produce colored water deposits Runoff and leaching from natural Chloride 250 mg/L - 250 ppm May produce a salty taste deposits; seawater influence 15 C.U. - 15 C.U. May produce a visible tint
Secondary Contaminants Chart SMCL, Sources to Drinking Water, and Health and/or Aesthetic Effects KEY: CASRN - Chemical Abstract Services Registry Number mg/L – milligram per liter (same as ppm) SMCL – Secondary Maximum Contaminant Level ppm – parts per million C.U. – Color Unit ppb – parts per billion T.O.N. – Threshold odor numbers Chemical (CASRN) SMCL To convert for CCR, multiply by SMCL in CCR units Source to Drinking Water Health and/or Aesthetic Effects Aluminum 0.2 mg/L 1000 200 ppb Residue from water treatment process: erosion of natural deposits May produce colored water Chloride 250 mg/L - 250 ppm Runoff and leaching from natural deposits; seawater influence May produce a salty taste 15 C.U. - 15 C.U. May produce a visible tint
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