Sewer Disposal Approval Guidelines

Effective immediately, the EH&S Environmental Compliance Division (ECD) has pre-approved the below listed waste streams for sewer disposal. These waste streams no longer require approval by EH&S prior to sewer disposal. However, if your lab sewers any of the pre-approved solutions below, please document this information in your lab-specific training. Please forward this information to appropriate labs within your Department. EH&S is available to answer any questions. Thank you.

Click here to view Pre-approved solution list
SolutionCampus Approved
< 3% hydrogen peroxide aqueous solutionsWUSM and Danforth
< 4% Paraformaldehyde in Phosphate Buffered Saline (PBS)WUSM and Danforth
≤ 10% bleach aqueous solutionsWUSM and Danforth
Calcium chloride aqueous solutionWUSM and Danforth
Cell culture media deactivated with 10% bleach solutionWUSM and Danforth
Ethylenediaminetetraacetic acid  (EDTA)WUSM and Danforth
Glucose aqueous solutionsWUSM and Danforth
Phosphate buffer aqueous solution (PBS)WUSM and Danforth
Saline aqueous solutionsWUSM and Danforth
Sucrose aqueous solutionsWUSM and Danforth
Tris bufferWUSM and Danforth
Tris buffered saline (TBS)WUSM and Danforth
Tris-acetate-EDTA (TAE) bufferWUSM and Danforth
TWEEN bufferWUSM and Danforth
Unused cell culture mediaWUSM and Danforth
Formalin < 10%WUSM only
Gel GreenWUSM only
Gel RedWUSM only
Magnesium sulfate aqueous solutionWUSM only

Click here to submit a sewer disposal approval Form