From observations in the Republic of Argentina it is concluded that the regular intake of drinking water containing more than 0.1 ppm of arsenic leads to clearly recognizable signs of intoxication and ultimately in some cases to skin cancer.

An acute massive epidemic of arsenic poisoning in Argentina involved 718 subjects. Urine samples were obtained from 307. The 49 with urine arsenic 76-500 micrograms/dl and 12 with urine arsenic greater than 500 micrograms/dL received dimercaprol treatment. Symptomatology increased with the urine arsenic with increased diarrhea, vomiting and systemic symptoms at urine arsenic greater than 75 micrograms/dL.