The 158 domestic wells on file within 5 miles of Bruin, from the state’s drilling logs: your neighbors’ wells, and the best guide to this ground.
Source: PaGWIS (PA DCNR), domestic wells within 5 miles, retrieved 2026-09-30; older paper-record locations are approximate.
Weak or Strong: The Yield Spread
The median well logged around Bruin gave 18 gallons per minute, plenty for a typical house. The median hides a wide range, though. Of the 149 logs that record yield, a quarter came in at 7 gallons per minute or less, and another quarter at 30 or more.
Nothing at the surface says which you’ll get. Each bore meets its own set of cracks and water-bearing layers in the rock, so two wells a short distance apart can differ a lot. That’s why the pump is chosen after drilling, from the measured yield: a submersible pump set to what the well can give, and a pressure tank big enough that the pump isn’t starting every time a tap opens.
Rock Close to the Surface
Soil is thin over the rock around Bruin. Among the 101 logs that note bedrock, the median depth to it is 15 feet; a quarter reached it within 7 feet and three in four by 25. Casing usually runs from the surface down to rock and is seated in it, so here it’s typically a short run, and most of the bore is open hole in rock.
Geologic maps put the Allegheny Formation under the town: Pennsylvanian sandstone, shale, limestone, clay and coal. The driller’s log records each change in the rock and the depth where water came in. What a new well costs covers how footage and casing add up, and residential well drilling explains how a bore is planned.