Hours of Operation


Monday - Thursday

8:00 am - 4:30 pm



8:00 am 2:30 pm



Geo-Monitor, Inc. is California State Certified for the Microbiology and the General Physical analyses of drinking and recreational water. 


Conveniently located in Hesperia, Geo Monitor  provides services to the high and low desert regions of San Bernardino County. Geo Monitor is also able to accept samples for a full array of analyses as samples are transported twice daily to our main lab in Grand Terrace.

Clinical Laboratory of San Bernardino, Inc.




 17152 Darwin Avenue

Hesperia, CA 92345



(760) 244-3481

Geo-Monitor Inc.

California Department of Health Services Environmental Laboratory Accreditation Program Certification Number 1088


Your Water and Wastewater Analysis Solution