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Langelier Saturation Indices Computed for U.S. Groundwater, 1991-2015; Characteristic Values for States

Dates

Publication Date
Start Date
1991-01-11
End Date
2015-11-24

Citation

Belitz, Kenneth, Jurgens, B.C., Johnson, T.D., 2016, Langelier Saturation Indices Computed for U.S. Groundwater, 1991-2015; Water Well Data and Characteristic Values for States: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F7XW4GWX.

Summary

The occurrence of metals, such as lead and copper, in household drinking supplies can often be a result of the corrosion of pipes and joints in water distribution systems. One measure of the potential for water to cause corrosion is the Langelier Saturation Index (LSI) (Langelier, 1936). The LSI is a measure of the potential for water to deposit a mineral layer (scale) within a water distribution system that can inhibit the corrosion of pipes and joints. Negative values of LSI suggest mineral deposition is not likely to occur while positive values indicate conditions favorable to mineral deposition. Negative values of LSI might be indicative of conditions that lead to elevated concentrations of metals, such as lead and cooper, in household [...]

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LSI_State_pies.png thumbnail 372.54 KB
Shapefile: LSI_StateMap.zip
LSI_StateMap.CPG 5 Bytes
LSI_StateMap.dbf 6.71 KB
LSI_StateMap.prj 167 Bytes
LSI_StateMap.sbn 604 Bytes
LSI_StateMap.sbx 140 Bytes
LSI_StateMap.shp 5.83 MB
LSI_StateMap.shx 508 Bytes

Purpose

The purpose of this report is to provide information that can be used to evaluate one indicator of the potential corrosivity of groundwater sources of the United States. Characteristic values of the Langelier Saturation Index (LSI) at a statewide scale are used as an indicator of corrosivity.
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