Mettler is not on the San Andreas. It's on the White Wolf Fault, which generated the Kern County Magnitude 7.5 quake in 1952, the third-largest in Southern California in the last 200 years.
It would likely take hundreds, perhaps thousands of years for the White Wolf to accumulate enough strain for a repeat performance.
Which fault was the Ft. Tejon quake (1856?) on?
Very close to the California Aqueduct however.
We felt it here in El Segundo. No big deal.