The 919 domestic wells on file within 5 miles of Grove City, 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.
Long Casing Before Rock Near Grove City
Of the 618 local logs that record bedrock, the median depth to rock is 50 feet, and a quarter reached it only at 75 feet or deeper. Casing usually runs through the loose ground above the rock and seats in it, so soil can’t cave in or wash into the well. On a typical lot here, that is a long run of pipe before the open hole begins.
By median well depth, Grove City sits 8th of 15 Mercer County towns, so depth is middling here; the thing to plan around is how far down the rock starts. Under the town the mapped rock is sandstone and conglomerate of the Pottsville Formation. Both air rotary and cable tool rigs are part of residential well drilling, and the well cost page shows where casing footage fits in.
Steady Yields and Pressure Around Grove City
Yield is the easier number here. Across 734 yield logs the median is 25 gallons a minute, and only a quarter came in at 18 or less. With flow like that, the household’s demand, more than the well, usually sets the size of the well pump. A flow test at the end of drilling gives your own well’s figure, and that number, not the median, sets the pump.
Pair it with a pressure tank big enough that the pump isn’t starting at every tap, or with a constant-pressure upgrade that keeps pressure level as demand changes. The borough draws groundwater too, from four wells, and what its system does to that water is on the treatment page for Grove City.
