Easy Composting Toilet Waste Disposal Guide


Have you ever felt lost about how to get rid of your composting toilet waste safely? Or wondered about the solid waste that gets separated in these systems?

You are certainly not alone. Like many, I’ve grappled with how to handle compost human waste and had my fair share of questions about the right methods. Sometimes, the sheer volume of information, including surprising facts from the World Health Organization about composting toilets, can be overwhelming.

And while we’re on the topic, you might be interested in some surprising facts about composting toilets I’ve discovered.

Thinking about adding a compost toilet to your main home, cabin, or off-grid dwelling, or perhaps considering RV composting toilets? Knowing how to manage the waste correctly, whether it’s using a separate compost bin or ensuring you have the right kind of toilet paper, is just as vital as the initial investment.

Before diving in, consult this buyer’s guide to ensure the compost toilet you’re eyeing is the perfect fit for your needs.

To aid in this, I have assembled a straightforward guide offering tips on managing your compost toilet waste.

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Understanding Composting Toilet Waste | What is it?

image of composting toilet waste in hand
Image credit by varazdin-express from Pixabay

Composting toilets are rapidly gaining traction among eco-conscious individuals and communities. 

But what exactly is composting toilet waste, and why is it so different from conventional waste? Let’s break it down.

The Science Behind Composting Toilets

Unlike traditional flush toilets that use a significant amount of water to whisk away human waste to sewage systems, composting toilets work by promoting the natural decomposition of waste. 

They operate under aerobic conditions, which means they rely on oxygen to facilitate the breakdown of waste into organic compost. This composting process, aided by microorganisms, reduces the volume of waste significantly and transforms it into a more benign, often nutrient-rich material.

Addressing Concerns About Handling Compost Toilet Waste

  • Safety: The primary concern most have is safety. With proper maintenance and handling, composting toilet waste can be just as safe as traditional sewage systems. The composting process itself tends to kill off pathogens, making the final compost safer to handle.
  • Odor: Another concern is the odor. Contrary to what one might expect, well-maintained composting toilets produce minimal odors. If managed correctly, the aerobic decomposition prevents the formation of foul-smelling gases.
  • Environmental Impact: Composting toilets reduces the strain on sewage systems and lowers the amount of freshwater used, making them a more sustainable choice.

In short, composting toilet waste is the product of a natural, water-saving process that transforms human waste into a reusable, often beneficial, material. 

It is all about understanding the system, maintaining it properly, and respecting the balance of nature.

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Disposal Options for Composting Toilet Waste

Image Credit: Greta Hoffman from Pexels

Think of composting toilet bowl waste as leftover ingredients after a meal. Before diving into disposal methods, you might want to consider which compost toilet fits your needs best.

This detailed guide will show you how to convert toilet waste into valuable compost or just discard it the right way.

1. Using Designated Dump Stations

Finding a Nearby Dump Station

Locating a nearby dump station can be done through an online search or by using dedicated mobile apps, many of which even provide user reviews. 

Local RV parks and camping sites, unlike wastewater treatment plants, are often equipped with amenities for compost toilets.

Understanding Their Protocols and Rules

Upon identifying a station, it’s important to familiarize yourself with its disposal protocols. Each station may have varying rules. For instance, solid waste must be in a trash bag before disposal.

While some may ask for a fee, others may operate only during specific hours. Always make sure you are discarding waste in the areas marked for it to avoid any contamination.

2. Using Your Garden or Backyard

Image by Lukas from Pixabay

If you have a house, cabin, or second summer home equipped with a compost toilet, the resulting solid waste can be converted into compost for the land around you.

Using compost toilet waste, inclusive of toilet paper, as a garden supplement is an eco-friendly method to enrich the soil, without the need for any separation.

However, to maximize benefits and avoid harm, it is extremely to follow specific guidelines that I will outline below.

Proper Methods to Use Waste as a Fertilizer

To safely use compost toilet waste, consider its decomposition. The waste should have a crumbly texture, indicating it’s ready.

  • Decomposition: The waste should exhibit a crumbly texture and possess a neutral or earthy aroma, indicating it’s ready for use.
  • Ratio: Mix the composted waste with your garden soil at a 1:10 ratio for optimal distribution.
  • Selection: Prioritize the use of this blend for ornamental plants, flowers, or trees. It’s a good practice to avoid its application on vegetable or fruit crops.

Introducing Harmful Bacteria is Not Your Friend

Composting toilet waste might contain harmful pathogens if not treated correctly. To uphold the safety of your garden and the surrounding environment, adhere to these guidelines:

  • Extended Composting Time: Compost toilet waste might contain harmful pathogens. Let the solid waste compost for at least one year. This duration helps in breaking down most pathogens, much more efficient than typical sewage sludge treatments.
  • Regular Turning: Aerating the compost by turning it frequently supports aerobic decomposition, which helps in eliminating harmful bacteria.
  • Animal Barriers: Cover your compost pile to deter animals, which can spread the compost and its potential bacteria.
  • Safety First: Always wear gloves when handling composted waste and wash your hands thoroughly after.
  • Moisture Control: Maintain a damp condition in the compost pile, avoiding excessive wetness. Proper drainage helps prevent conditions that might hinder bacteria breakdown.

3. Setting Up a Proper Compost Pile

Photo by Markus Spiske on Unsplash

Setting up a compost bin for your compost toilet waste is akin to preparing a favorite dish.

You need the right ingredients, in the right amounts, and in the right environment to make it come out just perfect. 

And trust me, once you get the hang of it, managing composting toilet waste becomes as easy as whipping up that favorite dish of yours. 

Here is a peek into my personal composting recipe.

Picking the Perfect Spot

Just like in managing septic tanks, the location matters. You’d need a spot with both sunlight and shade, good drainage, and a safe distance from living spaces.

  • Balanced Exposure – I found a nook that caught both the sun and shade. Too much sunlight, and it is like overcooking your veggies. Too little, and you are left waiting for them to simmer.
  • Good Drainage – Just like you wouldn’t want your pasta to be waterlogged, your compost pile shouldn’t be either. A spot with natural drainage works wonders.
  • Safe Distancing – I made sure to keep the pile away from water sources and my living space, kind of like how you’d store raw and cooked food separately in your fridge.

Aeration and Moisture – The Key Ingredients

Balancing air and moisture is vital. Regularly turning the pile ensures it gets enough air, unlike septic tanks which are more sealed systems.

  • Let It Breathe – Regularly turning my pile made sure it got enough air, making the decomposition process swift and smell-free. It’s akin to kneading the dough just right.
  • Moisture Magic – I always aim for the moisture level of a squeezed-out sponge. If it feels a tad dry, I sprinkle a bit of water, and if it’s dripping wet, I toss in some dry leaves or peat moss, much like adjusting flour and water in your bread mix.

4. Offering Composted Waste to Garden Centers or Nurseries

image of garden centers and nursery to offer composting toilet waste
Image by JamesDeMers from Pixabay

Stepping into the lesser-known territory of sharing compost toilet waste can be like navigating uncharted waters. When introducing them to your compost toilet methods, it’s essential to pack the solid waste properly, ideally in a trash bag.

The Whys of Hesitation

  • Trust Issues: Just as you might be wary of a stranger offering you a homemade treat, garden centers might be skeptical if they don’t know you or your composting habits.
  • Knowledge Gaps: They might not be familiar with composting toilet techniques, making them hesitant to accept waste that’s, well, personal.

Bridge the Gap

  • Foster Relationships – Getting to know your local nurseries and building a relationship can help bridge the trust gap. Once they see you’re serious about your composting methods, they might be more receptive.
  • Show and Tell – Introduce them to your composting techniques. When they understand your process and see the care you put into it, they might be more willing to accept your compost gift.

What to Do

  • Research First – Before heading out, do a quick online search or make a few calls to local garden centers and nurseries. Inquire if they accept composted toilet waste.
  • Pack It Right: A personal tip from my experience – always transport compost in a spill-proof bag or a dedicated solids container. It prevents messes and shows that you’re considerate of the recipient’s facilities.

What Not to Do

  • Avoid Surprise Visits: Just as you wouldn’t appreciate an unexpected guest at dinner, don’t just show up unannounced with your compost. Always discuss the specifics with the center or nursery in advance.
  • Full Disclosure: Never hide the origin of your compost. Be transparent about it being from a composting toilet to allow the recipient to make an informed decision.

5. Sharing Your Neighbor’s Yard

image of an open metal gate looking into a yard
Photo by Alvin Engler on Unsplash

Setting up a composting system might seem like a solo journey, but sometimes, the community is closer than you think.

 Have you ever considered the potential of your neighbor’s yard? 

Let me share with you my experience and some steps on how you might go about it.

Ask and Explore

Before approaching your neighbor with a proposal to share their yard for solid waste from your compost toilet, always communicate. You might discover that they’re already using compost toilets, making it an easier conversation. And, if they’re new to the concept, introducing them to the idea might just be the start of a community composting initiative.

Sometimes, all it takes is a simple question to discover untapped resources right next door.

Discover Nearby Piles

If you’re like me, you may not even be aware of the composting goldmines nearby. On one of my leisurely evening strolls, I saw that the yard two houses down had a well-maintained compost heap. 

It was a gentle reminder to keep my eyes open. Your neighbors might be composting pros, and their piles could be a potential spot for your waste.

A Common Passion

Bonding over composting might sound quirky, but trust me, it can lead to some heartwarming connections. My neighbor, Mrs. Anderson, and I now have a shared composting schedule.

 We take turns maintaining the pile and have lovely chats over the fence about the latest in composting news.

Legal Considerations in Waste Disposal

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Just as we wouldn’t drive without understanding traffic laws, it’s vital to know the rules around composting toilet waste disposal. These regulations exist for a good reason – to keep our environment clean and our communities safe.

Disposing of Compost Waste Safely

Dropping composting toilet contents directly on the ground might feel natural, but it is actually illegal in many places. 


Human waste takes its time breaking down, and as it does, it can harbor potential parasites or diseases. 

Plus, when this waste is near the ground level, rain can make the bacteria in it seep into groundwater – the same water some of us drink. So, always think of the actions you take when you dispose of your waste. 

Places to Be Careful

  • Near your veggies: Not a great idea to dispose of your waste close to food crops. Why? It’s all about safety.
  • Areas with a lot of underground water: High water tables mean a greater chance of contamination.
  • Into the sewers: Our sewage systems aren’t built to handle composting toilet waste, and we don’t want to be responsible for blockages or overflows.

Storing Unused Compost

Not all compost gets used up at once. If you find yourself with a surplus, make sure you have a dedicated space for it. 

Maybe even consider setting up an outdoor composter. They are handy and keep things organized. Just remember to keep it secure and out of reach from curious critters.

The Deal with Urine in Compost Piles

Okay, here’s some good news for those who have been wondering. Yes, you can add pee to your compost piles. 

Urine, along with other organic matter, breaks down into a nutrient-rich material that plants love. 

And those helpful heat-producing bacteria in compost? They’re sturdy enough not to get knocked out by the ammonia you produce.

Being Wise with Liquid Waste

Composting toilets have this neat feature, they separate solid and liquid waste, also known as urine-diverting. 

While the solids go on to fertilize our gardens, what about the liquids? Well, they can be a wonderful addition to moisture-loving landscapes. 

However, a word of caution…

Dumping raw liquid waste without treating it can be an environmental no-no. Always treat before you spread!

Places to Avoid When Disposing of Human Compost

Ah, navigating the world of compost disposal can sometimes feel like walking through a minefield. You really don’t want to step in the wrong spot. 

Let me walk you through some areas you definitely should avoid.

Protecting Our Precious Water

Water is vital, so we shouldn’t let our human compost near it. Avoid disposing of compost close to water sources.

Rain can wash the bacteria into the groundwater or nearby streams. Remember, once contaminated, it’s not just fish swimming with the consequences. We might be drinking it too.

Keeping Food Crops Safe

You might be thinking, “Nature does its thing, so why not near food crops? 

Here’s the scoop, our human compost can harbor potential pathogens. While the risk is minimal with well-composted waste, why gamble? For the love of crisp salads and juicy tomatoes, let’s keep our food crops in the clear and our bellies out of trouble.

Urine in Compost Piles

image of someone mixing a compost pile using urine
Image by Peter Heinzl

You might be surprised to hear this, but our own urine can actually benefit our compost piles. I know it’s not a typical topic of conversation, but there’s some solid reasoning behind it.

The Science of Urine in Compost

When I first looked into this, I discovered that urine isn’t just water. It’s packed with urea, salts, and minerals. In the compost, urea breaks down and releases nitrogen. This nitrogen boosts the compost, speeding up decomposition and enriching the mixture for plants.

Using Urine as a Fertilizer

At first, the idea of pouring urine on my plants felt a bit strange, but after trying it out, the results were clear. 

Here is a basic guide on how I do it.

  • Dilute Before Using: Straight urine can be too strong for plants. Mixing it with water helps. I use a ratio of 10 parts water to 1 part urine.
  • Pour Carefully: I pour the mixture at the base of my mature plants, making sure not to get it on the leaves or stems.
  • Timing Matters: It’s best to add it either in the early morning or late evening. This lets the plants soak it up without the sun quickly drying it out.

Guide to Disposing Your Composting Toilet Waste | Step-by-Step

image of wheelbarrow next to its compost pile made from composting toilet waste
Image by Manfred Richter from Pixabay

If you’re using a composting toilet, or even just considering it, knowing how to properly manage the waste can feel like a bit of a puzzle. But once you have got the steps down, it is smooth sailing. 

So, here’s how I figured it out.

Laying the Groundwork

Picking the Perfect Spot

When setting up my compost site, I aimed for a sweet spot – spacious enough for the compost to grow, yet far from trees, low branches, or my favorite garden spots. 

And let’s not forget height! Elevating it about 4 feet off the ground made a lot of difference.

Why I Love Sawdust

I was a bit skeptical at first, but adding sawdust to my compost heap really changed the game. It isn’t a must, but it sped things up and made the process smoother. 

So, if you’ve got some spare, why not toss it in? Alternatives like non-chemical peat moss would work as well. 

Gathering the Goods

The Right Tools

For the collection bit, I settled for a simple external waste container. I’d gather the goods roughly every three months, moving them from the bin to a bigger pile where they could finish their transformation journey.

My Collection of Steps

  1. First, I’d scoop out the waste using a bucket or compost-friendly bag.
  2. Donning gloves, I’d separate out the solid stuff. (A scoop works wonders here!)
  3. Next, these solids go straight into my composting toilet’s waste tank.
  4. A sprinkle of water helps soften things up before adding to the pile.
  5. A handful of peat moss or coco coir, followed by a covering of hay or sawdust, makes sure everything is soaked up and aerated.
  6. My little secret? Every couple of weeks, I mix some of the compost material with soil and bury it in layers. It’s my hack for speeding up the decomposition process.

With a bit of practice and some patience, it becomes second nature.

Disposing of RV Composting Toilet Waste

image of an recreational vehicle

Disposing of RV Composting Toilet Waste is like separating egg yolks from whites in baking; it requires precision, the right tools, and a touch of patience.

Tackling Waste Disposal for RV Living

RV living offers an incredible sense of freedom, but with that comes the practicality of dealing with waste. Now, composting toilets, like Nature’s Head Composting Toilet, make that process eco-friendly by turning waste into high-quality compost. 

But disposal? That’s a whole other ball game.

The Traditional Black Water Tank

Most RVs come with a built-in black water tank. It’s like the RV’s personal little sewage treatment plant on wheels. It collects all your waste and holds onto it until you decide it’s time to bid it goodbye. 

But there’s a little hiccup. You’ve got to empty it. And if you’re someone who’s living the full-on RV life, you’re looking at a weekly, or bi-weekly pit stop at a public dumping station. 

While convenient, the costs can add up. However, for those who’d rather not handle the disposal themselves, RV parks or campgrounds with dump stations are a godsend.

Composting Challenges

Going the composting route is commendable. But, remember, your composting toilet’s designed for human waste, not pet gifts or other unexpected surprises. Why? 

The microbes in your composting toilet are the good guys, breaking down human waste without any nasty odors. 

Want to keep things smelling fresh? A little baking soda or an air freshener does wonders. And if you’re still on the fence about smells, installing a fan with a carbon filter in your RV keeps the air fresh and your travels pleasant.

Effective Disposal Techniques

When you’re on the road, every problem has a solution. 

No sewer? No problem! Here is how to keep things clean.

Manual Dumping

  1. Scout a designated dump station.
  2. Uncap your holding tank and get all that waste into a designated disposal container. This could be anything from specialized containers to a trusty bucket.
  3. Once the deed’s done, cap it. You don’t want any surprise spillages.
  4. Put everything back in its place. You’re good to go!

Designated Locations 

We touched on this earlier in the article. Many places offer special RV composting disposal areas. They are commonly found in state parks, campgrounds, and some rest stops. 

Here’s your game plan…

  1. Spot an available dumping site.
  2. Get your RV in position and connect your wastewater hoses.
  3. Turn on those valves, uncap, and let the flow begin. When it’s done, remember to cap it!
  4. Now, depending on where you are, you’ll have guidelines on the final disposal. Stick to them and don’t change your plan.

Monitoring and Maintenance

One golden rule of RV composting toilets? Keep an eye on your sewage capacity. 

Many can hold up to 30 gallons or more. While you might think you have endless space, around the 350-500 mile mark, it is good to do a check-in. 

If you’re using just the compost toilet’s internal chamber and not the black water tank, it’s good to empty it every 2-4 weeks with two people using it. I like to check weekly and empty it to avoid any bad smells in the RV.

Taking It One Step Further | Turning Compost Toilet Waste into Garden Fertilizer

image of gardener planting vegetables in the garden using composting toilet waste
Photo by Greta Hoffman from Pexels

Want to make your garden flourish without the synthetic stuff? Your composting toilet waste might just be the secret sauce.

The Upside of Using Compost Waste as Fertilizer 

Think of your composting toilet as a two-in-one deal. Not only does it manage waste, but it also provides a natural, nutrient-rich boost for your garden. No chemicals, just pure, natural goodness.

The How-To of Using Compost Toilet Residues in Your Garden Safely

Your composting toilet takes organic waste and, with the help of microorganisms, turns it into fertile soil. It’s an eco-friendly process, perfect for the planet and your plants. But to get the best results, there’s a right way to go about it. 

Let’s find out how to maximize your composting benefits.

  1. Wait for Full Decomposition: Before using the compost as fertilizer, ensure it has fully decomposed. This usually means waiting for a few months after the last deposit.
  2. Test the Compost: Check the pH level and ensure it’s balanced before applying to your plants.
  3. Use Sparingly: Just like any fertilizer, too much of a good thing can be detrimental. Apply in moderation.
  4. Be Cautious with Edibles: If you’re using the compost for edible plants, take extra precautions. Maybe consider using it for ornamentals or non-edibles instead.

Wrapping Up

image of gardener in a greenhouse planting plants
Image by Ekaterina Ershova from Pixabay

Composting toilets and waste disposal can seem complex at the beginning. But with time and practice, the process becomes second nature. 

I’ve given you the foundation to start. Remember, each experience teaches us more. 

Keep checking back on my blog for more tips and guidance. Your journey with composting toilets will only get smoother. 

Your support is invaluable, and I’m eager to share more with you in upcoming posts. Until next time!

Frequently Asked Questions on Composting Toilet Waste

How long can I store composted waste before it needs disposal?

From my experience, you can usually store fully composted waste for several months without issues. However, I always recommend using or disposing of it within the season it’s produced, just to keep things fresh and efficient in your composting system.

Can I use composting toilet waste for all types of plants in my garden?

To be honest, I’ve found that mature compost from toilets works great for ornamental plants and trees. But when it comes to edibles, like veggies and fruits, I’m a bit more cautious. It’s essential to ensure that the compost is well-aged and has no pathogens. 

Personally, I use it primarily for non-edibles to play it safe.

What should I do if my composting toilet has a persistent bad odor?

Ah, good question! If there’s one thing I’ve learned, it’s that a well-functioning composting toilet shouldn’t stink. If yours does, it could be due to insufficient aeration or too much moisture. 

Want to get the hang of managing odors and ventilation? Check out some best practices I’ve come across.

I often add some dry material, like sawdust or coconut coir, to balance things out. Ventilation is key here. 

Are there specific climates or conditions that affect the efficiency of composting toilets?

Oh, absolutely! I’ve noticed that in very humid climates, the composting process can slow down a bit, and you might need to add extra dry materials. 

Conversely, in arid regions, moisture might be needed to keep the process going. It’s all about finding that sweet spot for your particular environment.

Extremely cold climates would definitely affect the composting process within self-contained compost systems. 

Do composting toilets attract pests or insects more than traditional toilets?

I used to worry about this too. But in my journey with composting toilets, I’ve found that a properly maintained system doesn’t attract pests anymore than a traditional toilet would. Just ensure the compost isn’t too wet, and the lid is securely placed, and you should be good to go.

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