Ground water in the Norwalk, Suffield, and Glastonbury areas, Connecticut . and the averageamounts of each constituent are reported, together with the numberof analyses or assays used in obtaining the average. Figure 12 is agraphic representation of the table comparing the groups of analyses of dolomite water and beach-sancl water are not plottedexcept as they are involved in the general average of the 25 analyses. With the possible exception of the analyses of w^aters from strati-fied drift and till, the number of analyses available is too small torepresent adequately the average
Ground water in the Norwalk, Suffield, and Glastonbury areas, Connecticut . and the averageamounts of each constituent are reported, together with the numberof analyses or assays used in obtaining the average. Figure 12 is agraphic representation of the table comparing the groups of analyses of dolomite water and beach-sancl water are not plottedexcept as they are involved in the general average of the 25 analyses. With the possible exception of the analyses of w^aters from strati-fied drift and till, the number of analyses available is too small torepresent adequately the average composition of waters from tlievarious water-bearing formations. As it is inadvisable to drawgeneralizations from these data regarding the quality of water byformations, the graph (see fig. 12) and tables of averages are pre-sented with that understanding and are not intended to be inter-preted as conclusive. The presence of carbonate in waters is dependent upon the con-dition of its chemical equilibrium with bicarbonate. As the (iROixn WATioi; loi; itiujc srijLN (>3. 64 GROUND WATER IN NORWALK AND OTHER AREAS, CONN. equilibrium is a variable, separate averages of carbonate and bicar-bonate are often difficult of interpretation. Thus it will be noticedin the table of averages of analyses that some of the waters con-tained no carbonate at the time of analysis, although it is possiblethat under certain conditions carbonate might be present in a basis for more careful comparison of the waters it would beadvisable to convert the bicarbonate into carbonate by dividing thefigure for bicarbonate by Averages of groups of analyses of waters from the icater-l)earing formations ofthe Nor walk, Suffiehl, and Glastonhurij areas, Connecticut. [Parts per million except as otherwise stated.] o jo ^^• m , M ^ ?3 o o o ? ^ 2 ?rt fHo, 2r7 ^ ^ ?^ o M ^ 2 ^s Formation. da i a 3o i?a 1 li 03 f o ^5 o d +3^— Kl a•3 CO o o o3~ oo |d s o o CO g 2 2 2; ^ Gneiss 2617 1
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Keywords: ., bookcentury1900, bookdecade1920, bookpubl, booksubjectwatersupply
