Some of the information found on a well log includes:
When the well was drilled and who drilled it
The depth of the well and how far down water was found
The diameter of the well and what it is lined with
What types of soil or rock the well goes down through
How much water flows from the well
It is good for well owners to have a copy of their well log. It is frequently required for building permits, and other situations which may require proof of drinkable water. If there is no copy of a well log available for an older well then a bailer or pump test may suffice where the output of the borehole is measured.
Click here for well log information at the Washington State Department of Ecology or call the Department of Ecology at 360-407-6300.