Many well owners are unaware that a well can be rehabilitated rather than having to re-drill. When well performance changes, it can be a result of organic or biological conditions slowly clogging off the perforations prohibiting water from entering the well. Newer wells can also suffer drastic yield changes in a short period of time due to the same down hole conditions developing at an accelerated rate. Various methods including NSF rated chemicals with special brushing and swabbing methods can break up the cloggage inside and outside the perforations allowing water to flow into the well once again unrestricted.