Toxic Substances Hydrology Program
DNAPLA dense nonaqueous phase liquid (DNAPL) is a liquid that is denser than water and does not dissolve or mix easily in water (it is immiscible). In the presence of water it forms a separate phase from the water. Many chlorinated solvents, such as trichloroethylene, are DNAPLs. DNAPL Headlines
More Information on the Fate of DNAPLs
Additional USGS Information on DNAPLs
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