Groundwater & Basement Water Intrusion in Scranton, PA

Mine mapping for the anthracite region exists and is held by state agencies, and it is the right starting point rather than guesswork. Coverage and accuracy vary, since some workings predate systematic record keeping, so a map showing nothing is not proof of nothing. For a specific property, a mine subsidence assessment goes further than the maps do. Both are worth doing before major below-grade work rather than after something has moved.

It is, in what survives rather than in the equipment used. Mine water carries iron and can be acidic, so it stains porous materials permanently and attacks metal sitting in it, including fasteners, ductwork, and appliance bases. Materials that were submerged generally come out rather than being cleaned, and metal that stays should be inspected rather than assumed sound. Drying on its own leaves the corrosion running.

In parts of the city, yes, and the two are related. Ground settling over old workings opens joints in foundations and slabs, and those joints then become the paths water uses. A new crack that keeps opening, a floor that has begun to slope, or a door that has stopped closing are worth documenting with photographs and measurements rather than patching, because the rate of change over a season is what tells a professional whether it matters.