Dataset includes repeated measures of the National Institute of Standards and Technology Standard Reference Material 2917 (SRM 2917) using an Enterococcus digital PCR (dPCR) assay. “This research dataset has been reviewed in accordance with U.S. Environmental Protection Agency (U.S. EPA), Office of Research and Development, and approved for release. Mention of brand names or vendors does not constitute an endorsement of products or services by the U.S. EPA.”