3. WATER
3.1
TAP WATER
New York City tap water has been sampled since August of 1954. Daily samples are pooled
to obtain a total volume of about 100 liters for the monthly period. Results are tabulated in
Table 16 and are plotted in Fig. 8.
0.337-
90.30
9.25
0.104
-—]-|——
—_—— >7. —
|}
0054
Fig. 8—Sr™ in New York City tap water.
Earlier samples have been reported from both the University of Chicago and the Lamont
Geological Observatory. The results of these analyses are presented in Table 17.
3.2
RIVER, PRECIPITATION, AND RESERVOIR WATER
As part of a study in marine waste disposal being conducted by the Agriculture and Mechanical College of Texas, samples of river water from the Mississippi drainage system were
analyzed for Sr™. Additional water samples were collected at the southwest pass of the
Mississippi Delta. The results are shown in Table 18.
Data obtained on surface waters at the laboratories of the University of Chicago and the
Lamont Geological Observatory are shown in Table 19.
3.3
SEA WATER
The area of the oceans is much greater than that of the land masses; therefore a large
fraction of fallout is probably deposited in the sea. The sea is a mobile system, and deposition
48