NSF International, USA: Non-food Compounds Registration Program, which certifies products for use in federally regulated food production or transformation facilities. 

The Bacta-Pur® XLG-KIT (Bacta-Pur® XLG and Bacta-Pur® ACTIVATOR GS) is registered as acceptable for use in sewage/and or drain lines of official establishments operating under the Federal meat, poultry, shell egg grading, and egg products inspection programs. The NSF registration number is 119642 (nonfood category code L2).
http://www.nsf.org/USDA/whitebook/whitebook.pdf
http://www.nsf.com/USDA/letters/119642.pdf

CFIA (Canadian Food Inspection Agency):

The Bacta-Pur® XLG and Bacta-Pur® ACTIVATOR GS are registered under Non-Food Chemical Products program designed for registration of products found to be acceptable for use in federally registered food establishments.

Mass DEP (Massachusetts Department of Environmental Protection), which registers septic system additives allowed for use under Title 5
Bacta-Pur XLG, Bacta-Pur® Klean Drain, Bacta-Pur® Klean Septic are registered in accordance with Title 5 (section 15.027), as it has been determined that the products will not harm the septic system components, or adversely affect system function or the environment”
http://www.mass.gov/dep/water/wastewater/addallwd.htm

MA DEP Approval

Board of State Examiners of Plumbers and Gas Fitters, MA, USA that approves the Plumbing and Gas fitting products to be installed in Massachusetts
The BACTIVATOR® family of onsite incubators is approved under Massachusetts State Plumbing Code and/or the Massachusetts Fuel Gas Code for installation in Massachusetts.

MA Plumbers Approval Letter