Certified labs near Grass Valley, California
Folsom, California · (415) 377-0751
39 mi away
Sacramento, California · (559) 497-2888
50 mi away
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Official lab list for California
Recommended tests
- Every year: bacteria (total coliform and E. coli), nitrate, pH and total dissolved solids — CDC
Many labs accept mailed samples, so a lab a few hours away may still work for you.