Could you lose your license for one speeding ticket in California?

It's highly unlikely. In the state of California as mandated by the legislation in the Vehicle Code, there are specific criteria that must be met for suspending or revoking a driver license (yes, it's DRIVER license not driverS).

A speeding citation for 22350 CVC, 22349(a) or (b) VC is simply an infraction. There will be a fine, and you will recieve a point on your driving record. If your speed was less 24mph or less than the speed limit, you will have the option to attend traffic school which will make that point "vanish." Why would you care about the point? Most people are concerned about raised insurance rates, jobs or carrers that require clean driving records, and/or future tickets being more expensive and more risk of a license suspension. If you are in excess of 25+ mph over the speed limit, nothing I said above changes except you have to take the point, traffic school will not be an option.

The DMV and traffic courts take into account your driving record and the seriousness of each violation to determine whether or not suspending or revoking your license is appropriate. Typically, drivers who are ticketed and have 4+ points already on their record (either from collisions or past citations) can recieve 30 day suspensions on their license.

If you were cited for 22348(b) VC, Speed in Excess of 100+ MPH, in addition to a hefty fine (over $1,000) the court is mandated to suspend your driving privledges for 30 days persuant to the CVC.