I don't know about Stop and Shop brand, nor can I say anything about how flushable wipes in general affect sewer systems, but Cottonelle Brand definitely is safe for septic systems. I started using them daily a few years ago. Last year I had my septic tank cleaned and was told it was in tip-top shape, no clogs. I don't get that CR video - It didn't show that some brands broke down while others didn't and it missed the point completely. The wipes that claim to be septic safe are called safe on the basis that they break down quickly in septic systems, not just water.