I'm sure this paper is septic safe because it is almost transparent. It may be fine for a quick trickle but I think most people may need and want a bit more thickness for the average dump. I do not recommend it.
Tissue is a great value bought 2 packs and now I won’t need to buy tissue for at least 6-8 months. Tissue is soft and not necessary to use a lot at once good value for the money.