UCCE San Mateo/San Francisco does not have a soil analysis laboratory to offer these services to the public, but here is a list of soil and heavy metal testing labs we recommend.. 

SOIL ANALYSIS/PLANT DISEASE DIAGNOSIS

The labs we commonly recommend are:
(Please check prices and ask how to best collect the samples.)

SOIL TESTING:

Soil and Plant Lab
Santa Clara
408-727-0330

Perry Lab
Watsonville
831-722-7606

Peaceful Valley Farm Supply
Grass Valley
888-784-1722

HEAVY METAL TESTING:

University of Massachusetts
413-545-2311

Soil Control Lab  (does lead testing plus metals screening)
Watsonville
831-724-5422

PLANT DISEASE DIAGNOSIS:

Soil and Plant lab
Santa Clara
408-727-0330