Water flowing through fractures in bedrock aquifers is used for drinking water in much of the United States. Remediation of these aquifers, once contaminated, is often deferred because of difficulties in characterizing the extent of the problem and the lack of appropriate cleanup technologies. One possible inexpensive and efficient method for remediating these sites in situ may be bioremediation using the naturally-occurring microorganisms that live along the fractures in the bedrock. However, very limited data are available on the success/implementation of bioremediation in bedrock aquifers and this presentation will address some of the research and science coming from the Bedrock Bioremediation Center at UNH.