Our paper is great for alternative kinds of toilets, including composting, and sensitive systems like septic tanks. Our products have been tested for disintegration and “flushability”, and won’t cause any adverse effects from normal use (meaning, don’t stick a whole roll down at once!).
If you have a particularly sensitive septic system, we’d suggest asking your manufacturer whether any restrictions apply. For example, we know that some play nicer with 2-ply than 3-ply, but this can vary between systems.