Certified labs near Ontario, California

FilterTest offeredTownSort by

12 rows

A & R Laboratories, Inc.

Ontario, California · (951) 779-0310

1 mi away

Chino, California · (909) 627-3628

5 mi away

Pomona, California · (909) 590-5905

9 mi away

Chino Hills, California · (909) 393-3330

10 mi away

Pomona, California · (626) 386-1100

11 mi away

Pomona, California · (623) 298-1015

11 mi away

Grand Terrace, California · (909) 825-7693

17 mi away

Riverside, California · (951) 653-3351

17 mi away

San Bernardino, California · (559) 497-2888

19 mi away

Anaheim, California · (714) 771-6900

21 mi away

Orange, California · (714) 771-6900

23 mi away

Orange, California · (714) 937-0750

23 mi away

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.