Several weeks ago, I discovered that our household sump pump is bone dry. It's never been like that in the 14 years since the house was built. We did have a rather dry summer, but even after several very heavy rains lately, there is NO water in the sump pump well. In summertime, we do use a de-humidifier in the basement, but that has never had the effect of emptying the sump well before. Is this anything to be concerned about? We're in SW Ohio and have heavy clay soil, if that's relevant. Many thanks!