Table 4.-CHEMICAL ANALYSES OF SURFACE WATER IN PALM BEACH COUNTY, IN PARTS PER MILLION Date of Collection 0 Lake Okeechobee 5- - -Ju 30, 1940 ............ ........ 40 ........ 376 ........ ........ 41 11 22 138 27 38 .... 0.4 207 148 M arch 11, 1941.. .. ........ 50 ........ 337 ........ ........ 38 11 17 121 29 33 ........ .4 188 140 December 5, 1950 ........ 6 104 7.3 313 7.1 0.01 34 7.3 16 1.7 117 21 25 0.1 1.4 202 115 April 6, 191............. 73 40 8.1 400 7.8 .02 36 8.6 22 1.6 117 32 34 .2 1.2 266 125 West Palm Beach Canal at West Palm Beach April2,1941........ .... ........ 140 ........ 891 ................ 67 25 90 259 69 127 ........ 4.0 510 270 October 23, 1941 ......... ........ 160 ........ 241 ........ ........ 27 5.8 14 102 7.0 22 ........ .2 76 91 Jae 4, 1942 ............. ........ 140 ........ 10 ................ 19 3.6 15 61 14 22 ........ .2 104 62 November 11, 1942 ....... ........ 150 ........ 1,010 ........ ........ 67 25 103 252 67 153 ........ 1.6 541 270 October 7, 1943 .......... ........ 160 ........ 294 ........ ........ 34 6.6 12 98 10 33 ........ .3 144 112 December 31, 1943 ....... ........ 95 ........ 1,070 ........ ........ 62 22 132 252 58 188 ........ .8 587 245 M ay 31, 1944 ............ ........ 30 ........ 510 ........ ...:.... 53 12 35 178 28 58 ........ .4 274. 182 July 1, 1944 ............. ........ 70 ........ 1,050 ........ 60 20 133 272 49 175 ........ .2 571 232 West Palm Beach Canal at Loxahatchee Juy 5-9,1951................... 260 7.7 1,110 24 0.00 82 22 124 4.0 328 66 162 0.3 4.8 753 295 October 15-20,1951.............. 110 7.0 267 5.2 .22 32 2.2 18 .9 96 8 29 .2 1.3 178 89 3 12 July, 144..................7........1,50...............0 2 133272 49 75 57 23