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<br />Table VIII <br /> <br />HISTORY OF WATER QUALITY - BRIGHTON <br /> <br /> DATE OF SAMPLE <br /> 9/60 12/61 5/62 4/64 10/65 8/66 2/67 6/68 6/69 6/70 <br /> CHARACTERIST ICS <br /> Total dissolved solids 1320 1044 974 1051 1431 1099 1140 1172 1332 <br /> Total hardness 634 508 479 549 639 603 560 555 619 <br /> Fluoride 1.3 0.95 0.8 0.9 1.2 0.95 1.1 1.2 1.1 <br /> Selenium 0 0 0.005 0 0.005 0.001 0.002 <br />'" Chloride 155 122 123 139 205 152 151 150 176 <br />'" <br /> Copper 1.2 0.2 0 0 0 0 0 0 <br /> Iron 0 0.05 0.40 0.3 0.20 0.08 0.11 0.35 0 <br /> Manganese 0 0 0.05 0 0 0 0 0 0 <br /> Nitra te 50 6.4 58 53 53 21 65 55 72 40 <br /> Sulfate 425 300 274 283 470 338 349 343 435 <br /> Calcium Carbonate 490 364 372 372 495 463 432 426 438 <br /> Magnesium 35 35 26 43 35 34 31 31 44 <br /> Sodium 168 146 120 128 196 148 157 173 206 <br /> pH 7.1 7.2 <br /> Tempe ra ture 57 <br />