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<br />Table X <br />HISTORY OF WATER QUALITY - IT. MORGAN <br /> <br /> DATE OF SAMPLE <br /> 11/49 3/57 1/59 4/60 5/61 8/62 9/64 11/67 2/69 6/70 <br /> CHARACTERIST ICS <br /> Total dissolved solids 1160 1470 1590 1558 1626 1692 1599 <br /> Total hardness 743 898 865 864 670 928 878 866 890 884 <br /> Fluoride 0.5 0.8 0.9 0.7 1.0 0.65 0.7 0.8 0.7 0.9 <br /> Selenium . 0 0.017 0 0.005 <br />'" Chloride 46 48 52 46- 43 56 52 49 53 54 <br />... <br /> Copper 0 0 0 0 <0.1 0 0 0 <br /> Iron 0.1 0.01 0.02 0.01 <0.05. <0.05 0.1 0.05 0 0.05. <br /> Manganese 0 0.05 0 <0.1 0 0 0 0 0 <br /> Nitrate 9.6 16 27 25 19 30 ' 15 <br /> Sulfate 586 562 690 708 563 777 777 828 800 799 <br /> Calcium Carbonate 533 741 663 658 488 718 622 693 713 694 <br /> Magnesium 51 38 49 50 44 51 62 42 43 46 <br /> Sodium 58 85 110 100 100 114 104 114 138 158 <br /> pH 7.6 8.1 7.3 7.3 7.4 7.2 <br /> Temperature 54 52- 45 53 <br /> 59 <br />