BAL Laboratory

Welcome to BAL Laboratory

Field Collecting & Sampling Testing Service

Soil & Sediment Analyses - Biofilter media and Compost Labs

Food Analysis - LIM system & Seafood Testing Lab

BAL Laboratory, a division of Thielsch Engineering, Inc., provides testing services related to environmental and public health microbiology, including both conventional and unique, state-of-the-art approaches for monitoring and assessing microbial contamination problems.

BAL Laboratory is a full-service microbiology laboratory with a staff dedicated to the customer and their individual needs. The BAL Laboratory staff, with a combined experience of over 20 years, offers expertise in many areas of microbiological testing.

Our parent company, Thielsch Engineering, Inc, is a rapidly growing, employee owned company, comprised of over 300 people, providing a broad range of engineering, laboratory, and fabrication/repair services. For more information on Thielsch Engineering, Inc, visit their website at

BAL Laboratory is certified in Rhode Island and Massachusetts for potable and non-potable water.

Private Well Testing

Did you know that Rhode Island Department of Health recently developed and passed into law new regulations that require Private Drinking Water Systems to test their water?

To see how BAL Laboratory can help you understand these new regulations and perform the necessary testing Click Here!