About This Program
Specialized PT program for laboratories testing sewage sludge and biosolids. Important for wastewater treatment facilities.
Test Types Covered
- Sludge microbiology
- Biosolids analysis
- Indicator organisms in sludge
Sample Matrices
Sewage sludgeBiosolidsWastewater treatment residuals
2026 Schedule — Round 1
Enrollment Close14-Sep-26
Sample Dispatch5-Oct-26
Results Due2-Nov-26