Do you rely on a septic tank at a vacation home, cabin, farmhouse, RV, or boat? Then you know the one golden rule: whatever goes in has to break down. And toilet paper happens to be the product that makes the biggest difference. In this article you will learn what makes septic safe toilet paper, how to test in two minutes whether your current roll dissolves fast enough, and why bamboo toilet paper performs surprisingly well here.
Why toilet paper can be a problem for your septic tank
A septic system works with bacteria that slowly break down waste. Anything that does not break down, or breaks down slowly, sinks to the bottom and fills the tank as a sludge layer. The faster that layer grows, the more often you need to have the tank pumped, and the higher the risk of odors and clogs.
Thick, multi-ply supermarket paper with high wet strength is designed NOT to fall apart quickly. Great on the toilet, but disastrous for a tank: it stays intact for days to weeks and piles up. And "sewer safe" does not automatically mean "septic safe": the sewer flushes everything on to a treatment plant, while your tank has to digest it all by itself.
What should septic safe toilet paper deliver?
- Fast dissolving: the paper should break apart in water within a few minutes.
- No additives: lotions, fragrance, and bleaching residues slow down the bacteria in the tank. Better to choose unbleached toilet paper without added fragrance.
- Biodegradable: the more natural the fiber, the faster the bacteria can process it. More on that in our article on biodegradable toilet paper.
- Not too much at once: even the best paper clogs if half a roll goes down per flush. How to fix a clog is covered in toilet clogged by toilet paper.
Do the dissolve test (2 minutes)
Want to know whether your current toilet paper is septic safe? Here is how to test it yourself:
- Fill a glass jar three-quarters full with water.
- Drop in two sheets of toilet paper and screw the lid on.
- Shake firmly for five seconds.
- Look: if the paper breaks apart into small fibers, it is suitable. If it is still floating around as one sheet, it does not belong in a septic tank.
Is bamboo the best toilet paper for septic tanks?
It is an excellent choice. Bamboo fibers are relatively short and are not treated with the wet-strength agents found in much of the thick supermarket paper. As a result, bamboo toilet paper breaks apart quickly in water, while it feels strong and soft when dry. The unbleached bamboo toilet paper from Bamboi also contains no lotions, fragrance, or bleaching residues that disturb the bacteria in your tank. How that paper is made is explained in the production process of bamboo toilet paper.
RV toilet paper: tips for RVs, boats, and campers
For cassette toilets and holding tanks, the same rules apply, only stricter: the tank is small and has to be emptied by hand.
- Use thin or fast dissolving paper and be mindful of how much you use.
- Never flush wet wipes, not even the "flushable" ones. Why that goes wrong is explained in can you flush wet wipes down the toilet.
- Bring a bulk pack for longer stays so you never run out. See also toilet paper bulk packaging.
What should never go into a septic tank?
For the record, because the tank forgets nothing: wet wipes, paper towels, tissues, sanitary pads and tampons, fat and oil, paint, medication, and aggressive cleaning products (chlorine kills the bacteria that do the work). The rule of thumb: only the three P's, meaning pee, poop, and (suitable) paper.
Frequently asked questions about toilet paper and septic tanks
Which toilet paper dissolves the fastest?
Paper without wet-strength agents and without lotion, usually 2-ply or 3-ply paper made from short fibers such as bamboo. Do the dissolve test above to be sure.
Is 3-ply toilet paper too thick for a septic tank?
Not by definition. It is not about the number of plies but about how quickly the fibers let go. 3-ply bamboo paper without additives breaks apart faster than 2-ply paper with wet-strength agents.
How often does a septic tank need to be pumped?
On average every 2 to 5 years, depending on size and use. With fast-degrading toilet paper the sludge layer grows more slowly, stretching that interval.
Can bamboo toilet paper go in a cassette or chemical toilet?
Yes, it is actually a great fit. It breaks apart quickly and contains no substances that interfere with the tank additives. Do use it in moderation, because every tank has limited volume.
Conclusion
With a septic tank, you do not choose your toilet paper by color or price, but by how it breaks down. Fast dissolving, without lotions and without bleaching residues. Unbleached bamboo toilet paper ticks every box: septic safe, gentle on your skin, and sustainable. Discover the bamboo toilet paper from Bamboi® or first read all the benefits of bamboo toilet paper.
