Noble’s Notes: “A quarterly recollection from 40 years of service to the groundwater community.”

By John Noble

[Ed. Note: The following article originally appeared in our first newsletter edition, published in October 1999.]

Some things that are so obvious turn out to be not true at all. One of these is predicting the presence of iron in ground water – perhaps the most common and pervasive water quality problem with wells in much of the country. Ground water with dissolved iron commonly looks as pure and pristine as a mountain stream. However, it tastes like rusty pipes. The taste is bad enough, but let the water stand in air overnight and the iron will precipitate out into a red floc which is truly ugly. When I used to canvass domestic wells in Western Washington, under negative comments of quality, the commonest was “red water” or “too much iron”. Many drillers I have known have bypassed zones of red sands and gravels that are obviously rich in iron. They wanted a satisfied customer for their finished well. Unhappily, they were often dead wrong. The obvious problem was not really there at all. Continue reading →