The first time you see water in your basement, you start to panic. Where is the water coming from? Is the water dangerous that can make me sick? Can I clean it myself? Who do I call?
The first thing to do it not panic. Unless there is sewage water coming up from your floor drain, then you may just have surface water coming in.
Water coming in at the exterior foundation or from one location usually indicates surface water problems. Go outside and do an inspection of the following:
Those are the most common reasons for water entering your basement. If you can't locate the source of the leak, then it's time to call in a professional.