This is the second time I have seen this. Standing water around main water shutoff pipe.The first time was in an open pit in a crawlspace. This is in a slab foundation beneath the bathtub and behind a drywall access panel screwed down. No foul or offensive odors observed from the room itself until the panel removed typical stale water smell. Mostly concrete area but wood and drywall members a few feet above of course in the walls.
We have a high water table here in WV due to clay and sandy soil holding water as well as nearly every bit of land being a hill. It is difficult to avoid water in basements/crawl spaces.
My question is, is this due to the water table from the earth? Is it likely a leak? How exactly do I detail this as a defect and is this common in your area?