General Info

GeoAnalytical Laboratories, Inc. of Modesto, California was founded in 1989 and is owned and operated by Donna Keller. Ms. Keller has 25 years of technical and management experience in the environmental laboratory industry. GeoAnalytical Laboratories is a full service environmental laboratory, providing sampling and analytical services for the testing of drinking water, wastewater, sludges, soil, leaking underground fuel tanks, and hazardous waster. Services include microbiology, fish bioassay, inorganic chemistry, and organic chemistry including both volatile and semi-volatile. Our clients include government agencies at the federal, state, and local levels, large and small businesses, as well as private citizens. GeoAnalytical Laboratories sets itself apart from other 'full service' laboratories by providing fast turnaround times and flexible communication. Each and every member of our staff is accessible to our customers.