U.S. Geological Survey
Water-Resources Investigations Report 02-4228
Prepared as part of the
NATIONAL WATER-QUALITY ASSESSMENT PROGRAM

Quality of Shallow Ground Water in Areas of Recent Residential and Commercial Development, Wichita, Kansas, 2000

Table 6. Statistical summary and U.S. Environmental Protection Agency (2000a) drinking-water standards for
dissolved solids and major ions in water from 30 monitoring wells in areas of recent residential and
commercial development, Wichita, Kansas, 2000

[SMCL, Secondary Maximum Contaminant Level; MCL, Maximum Contaminant Level; --, not applicable]

Dissolved solids or major ion Number of
samples 		Concentration
(milligrams per liter)
 Minimum  Median  Maximum		 Drinking-water
standard
(milligrams per
liter)
Dissolved solids 30 229 492 1,630 500 (SMCL)
Calcium 30   33   88   180 --
Magnesium 30        3.4   15    50 --
Potassium 30     1     3     13 --
Silica 30   11      19.5     34 --
Sodium 30   14   58   320 --
Bicarbonate 30   83   320   700 --
Bromide 30           .06           .16           .47 --
Chloride 30   11   64   390 250 (SMCL)
Fluoride 30           .1           .3           1.1 4 (MCL)
2 (SMCL)
Sulfate 30         5.6   54   310 250 (SMCL)

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