leaching

I submit that a regular program of interaction would go miles in leaching partisan poison from the well in Washington.

In many American barnyards much of the manure is lost, partly by leaching and partly by escape of ammonia.

The leaching may carry radionuclides elsewhere, however, possibly causing mild contamination of the water table.

He had the serranos burn whole trees and from the ashes, by percolation through water, produce a leaching of lye.