Studies of Radioactivity in the Chicago Water Supply

Discussion

“…The radiologic laboratory at the South District Filtration Plant is equipped with two internal proportional counters and a conventional binary scaler. The techniques used in the laboratory are described fully in a previous article (1) . This discussion is concerned primarily with summarized data regarding monthly average gross radioactivity in the raw lake water and in the filtered outlet water of the South District Filtration Plant for the years 1956-1958, inclusive, and for the first 5 months of 1959, shown in Tables 15 and 16.…”