Answer: There are many places that you can buy sump pumps. Some common retailers include hardware stores, home improvement stores, and online retailers.
When shopping for a sump pump, be sure to consider the size of your drainage system and the amount of water that needs to be pumped. You will also want to make sure that the pump is rated for continuous duty so that it can handle constant use.
Finally, be sure to read reviews of any pumps you are considering purchasing to make sure you are getting a quality product.