With a certified design, you will receive warranty information on the major components of your system such as the tank, pump, filters, alarms, and control boxes. These warranties all come from the manufacturer and are valid only as long as the installation has been done correctly.
For concrete tanks from AWS, the warranty is 20 years and can be found here.
There are many different types of pumps and controls and warranties can range.
Your installer should provide you with warranty information on each component along with maintenance information to keep your warranty valid.