The objectives of this work were (i) to characterize the financial viability and environmental implications of fecal sludge management via OP technology and (ii) to elucidate the key drivers of system sustainability. To this end, we gather data and leverage quantitative sustainable design (QSD) to characterize the relative sustainability of the Biogenic Refinery 4018 (Biomass Controls PBC). Performance of this pyrolysis-OP was evaluated through quantitative models that leverage both pilot and full-scale data over extended operation times (several years). Two different implementation scenarios with different frontend facilities (pit latrines and container-based sanitation) provide the baseline for this study. By leveraging an open-source QSD tool (QSDsan ), trade-offs between these scenarios were assessed across the simulation space spanning the feasibility ranges of various design decisions and technological parameters.