National Water-Quality Assessment (NAWQA) Project

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Special studies on source-water and drinking-water quality
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Groundwater-Quality Trends

Home National Results and Maps Background Factors Affecting Trends Simulation and Forecasting Data Trends Publications

Chloride Trends Map:
umisluscr1 network in the Upper Mississippi River Basin Study Unit

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View a different trend for umisluscr1:
| Nitrate | Chloride | Dissolved solids |

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