Tiny house composting toilet

Crist Burnett

A tiny house composting toilet is a type of toilet specifically designed for small living spaces like tiny houses, cabins, or RVs where traditional sewage systems may not be practical or available. Composting toilets are an environmentally friendly alternative to conventional flush toilets because they don’t use water to flush waste, and they can help convert human waste into a nutrient-rich compost material.

Determining the “best” tiny house composting toilet depends on your specific needs, budget, and preferences. There are several reputable composting toilet brands and models on the market, each with its own set of features and benefits

Here’s how a typical tiny house composting toilet works:

1. Separation of solids and liquids

Tiny house living has become a popular choice for those seeking simplicity and sustainability. And when it comes to waste management, the separation of solids and liquids is a crucial aspect to consider. Enter the tiny house composting toilet, a sustainable solution that not only reduces water consumption but also creates nutrient-rich compost for your garden.

The separation process starts with diverting urine from feces, which holds numerous benefits. By keeping them separate, odor is greatly minimized as the liquid does not directly mix with the solid waste. Furthermore, urine can be diluted and used as a nitrogen-rich fertilizer for plants, promoting their growth without relying on synthetic chemicals or wastewater treatment facilities.

2. Liquid waste collection

One interesting aspect of liquid waste collection is its potential to address the challenges faced by tiny house owners, especially those utilizing composting toilets. These compact dwellings often lack access to traditional sewer systems, making it crucial to find innovative solutions for waste management. Liquid waste collection can play a pivotal role in this regard, ensuring that tiny house occupants have a convenient and sustainable way to dispose of their wastewater.

Moreover, liquid waste collection offers an eco-friendly alternative to traditional septic systems. While conventional methods require extensive infrastructure and energy-intensive processes for treatment or disposal, liquid waste collection systems can be designed with sustainability in mind. By collecting and treating our liquid waste separately from solid waste, we have the opportunity to repurpose this valuable resource through techniques like greywater recycling or converting it into biogas through anaerobic digestion. This not only reduces environmental impact but also presents economic benefits through resource recovery.

3. Ventilation system

One of the most important components of a tiny house composting toilet system is a well-designed ventilation system. This is crucial for maintaining proper airflow and preventing odors from permeating the living space. While some may believe that a small fan or window would suffice, it’s important to consider the specific challenges presented by a composting toilet in a tiny house setting.

A well-engineered ventilation system not only removes foul smells but also facilitates the breakdown of waste through aerobic decomposition. This process requires an optimal balance of oxygen and moisture levels, which can be achieved through strategically placed vents and fans. Additionally, proper airflow promotes the evaporation of excess liquid within the composting chamber, preventing anaerobic conditions that could lead to unpleasant odors and potential health hazards.

4. Compost maturation

Compost maturation is a critical process in the journey of turning organic waste into nutrient-rich soil. For those embracing the tiny house lifestyle, composting toilets offer an eco-friendly alternative to traditional flushing systems. These compact and self-contained units not only conserve water but also provide an abundant source of compost. However, achieving fully matured compost requires time, patience, and understanding.

During the maturation phase of composting, microorganisms break down complex organic matter into simpler compounds. This decomposition process results in stabilized humus that can be safely used as fertilizer for plants and gardens. While it may be tempting to rush this transformation by using incomplete or immature compost, doing so can have detrimental effects on plants due to the presence of phytotoxic substances or pathogens.

5. Compost removal

Once the composting process is complete, you can remove the finished compost from the toilet. This compost can be used as a fertilizer for non-edible plants, such as trees or ornamental gardens. However, it’s important to follow local regulations and guidelines for compost use.

Benefits of a tiny house composting toilet include water conservation, reduced environmental impact, and the ability to live off-grid more easily. However, they also require regular maintenance, including emptying the urine container and periodically removing finished compost.

There are various brands and models of composting toilets available, each with its own features and designs to suit different tiny house setups and user preferences. When choosing a composting toilet for your tiny house, consider factors such as space limitations, power requirements, ventilation, and ease of maintenance. Additionally, make sure to comply with local regulations and codes regarding sewage disposal and composting.

Here are some top options to consider:

1. Nature’s Head Composting Toilet

The Tiny House movement has gained popularity in recent years, with people opting for a simpler and more sustainable way of living. One crucial aspect of these compact dwellings is efficient waste management, which brings us to the Nature’s Head Composting Toilet. This revolutionary invention allows tiny house owners to make the most out of limited space while helping the environment.

What sets Nature’s Head apart from traditional flush toilets is its composting system. Instead of wasting gallons of water with each flush, this innovative toilet employs a separating mechanism that separates liquid waste from solid waste. The liquids are redirected into a separate container, allowing them to evaporate naturally or be disposed of properly, depending on local regulations. Meanwhile, solid waste is collected in another compartment where it decomposes over time through a combination of heat and microbial activity, ultimately transforming into nutrient-rich compost that can be safely used in gardens or disposed of sustainably.

2. Separett Villa 9210

One of the most essential aspects of a tiny house is maximizing space, and the Separett Villa 9210 composting toilet offers an innovative solution. This compact yet powerful toilet system not only saves valuable room in your small living quarters but also provides an eco-friendly alternative. With its odorless and efficient design, the Villa 9210 separates liquid from solid waste, reducing the decomposition process and minimizing odors. The urine is diverted into a separate container while solids are collected in a compostable bag, which can later be disposed of or used for fertilizing plants.

Aside from its space-saving capabilities, the Separett Villa 9210 also brings convenience to those living off-grid or in remote areas. Its unique ventilation system eradicates any unpleasant smells by installing a fan that continuously draws fresh air through the unit. Additionally, this composting toilet does not require water or plumbing connections, making it an ideal choice for tiny house owners seeking independence from traditional infrastructures.

3. Air Head Composting Toilet

The Air Head is another popular choice, particularly for tiny house living. It separates solids from liquids and has a fan-assisted ventilation system for odor control and moisture reduction. It’s compact and relatively easy to install and maintain.

If you’re a proud owner of a tiny house, then you already know that space-saving solutions are worth their weight in gold. But have you ever considered opting for an Air Head composting toilet? This innovative and compact system is changing the game when it comes to eco-friendly waste management in small living spaces.

Unlike traditional composting toilets, the Air Head uses a unique venting system that eliminates any unpleasant odors and keeps your tiny home smelling fresh. It also separates solid waste from liquid, which allows for faster decomposition and ultimately results in nutrient-rich compost. Intelligently designed with simplicity in mind, this no-water toilet requires minimal maintenance and only needs emptying every few weeks, making it ideal for off-grid living or those looking to reduce their environmental footprint.

4. C-Head Compact Composting Toilet

When it comes to tiny house living, there is often a challenge in finding efficient and sustainable ways to deal with waste management. This is where the C-Head Compact Composting Toilet comes into play. Designed specifically for small spaces, this innovative toilet system offers an eco-friendly solution that not only minimizes environmental impact but also maximizes usability.

One key feature of the C-Head Compact Composting Toilet is its portability. Unlike traditional composting toilets that are fixed in place, this compact version can easily be moved around, making it ideal for those who frequently relocate their tiny homes or enjoy taking extended trips off-grid. Its lightweight design and durable construction ensure hassle-free transportation without compromising on quality.

One of the standout advantages of the C-Head Compact Composting Toilet is its odorless operation. Thanks to its unique separation process, solid waste and liquid waste are kept separate, mitigating any unpleasant smells commonly associated with traditional composting toilets. This makes it not only user-friendly but also a more enjoyable experience overall.

5. Sun-Mar Compact Self-Contained Composting Toilet

Sun-Mar offers a range of composting toilets, including the Compact Self-Contained model. It uses a batch composting system and has a small footprint, making it suitable for tiny houses. It’s electrically powered and has a fan for ventilation. This compact toilet is specifically designed for small spaces, making it perfect for tiny house dwellers who desire an eco-friendly alternative to traditional flush toilets. What sets this composting toilet apart is its ability to transform waste into rich compost, allowing you to close the loop on your waste management system.

One of the key advantages of the Sun-Mar Compact Self-Contained Composting Toilet lies in its simplicity and convenience. Unlike other composting toilets that require separate bins or chambers for solid and liquid waste, this model combines both compartments into one single unit. This design ensures easy operation and maintenance while maximizing efficiency within limited space. Additionally, with its built-in ventilation system, odors are minimized and air circulation improved, further enhancing user comfort and contributing to a pleasant bathroom experience.

6. Environed Waterless Remote Composting Toilet

Environed offers remote composting systems that can be a good fit for tiny houses. These systems have a composting unit located outside the living space, with a toilet inside connected via a chute. They offer both waterless and low-water options.

Finding a suitable toilet system for tiny houses can be quite the challenge. In such tight spaces, every square inch matters, and traditional flush toilets take up too much room. That’s where the environed waterless remote composting toilet comes in to save the day, providing an efficient, odorless solution that requires minimal maintenance.

This innovative composting toilet works on the principle of harnessing natural processes to break down waste into compost rather than relying on water for flushing. By separating solid and liquid waste at their source, it not only reduces water consumption but also prevents any unpleasant odors from permeating your tiny house. Additionally, with its compact design and easy installation process, it fits seamlessly into even the tightest of spaces without compromising functionality.

When choosing the best composting toilet for your tiny house, consider the following factors

1. Space

Space, the final frontier. It has always captivated the human imagination with its vastness and mystery. But what if I told you that space is not just out there, but also within us? Scientists have discovered that our bodies are made up of stardust, elements formed in the cores of dying stars billions of years ago. This cosmic connection highlights the profound interplay between the universe and ourselves.

Furthermore, recent discoveries suggest that space holds more secrets than we could ever grasp. From black holes to dark matter, there are countless enigmas waiting to be unraveled. One such mystery is the possibility of extraterrestrial life. With new technologies and advancements in astrobiology, scientists are inching closer to finding signs of life beyond Earth. The idea that we might not be alone in this vast cosmos evokes both excitement and a sense of humility – reminding us how our place may be minuscule compared to the grand tapestry of existence.

2. Power Source

When it comes to choosing the best composting toilet, one of the key factors to consider is the power source. While traditional flush toilets rely on a constant supply of water and electricity, composting toilets offer an eco-friendly alternative. These innovative systems harness the power of nature to break down waste into nutrient-rich compost, but they require some energy input for ventilation and mixing.

There are different power sources available for composting toilets, each with its own pros and cons. Solar-powered units are a popular choice for off-grid locations or environmentally-conscious individuals looking to minimize their carbon footprint. They utilize solar panels to generate electricity that powers essential functions like fans and agitators. Another option is battery-powered units, which provide flexibility in terms of installation location since they do not require direct sunlight like solar-powered models.

3. Ventilation

When it comes to choosing the best composting toilet, ventilation is a critical factor that often goes overlooked. Adequate ventilation is not only essential for maintaining a fresh and odor-free bathroom environment but also plays a crucial role in the composting process itself. Without proper airflow, moisture can build up, leading to unpleasant smells and potentially hampering the decomposition of waste.

One option for ensuring sufficient ventilation in your composting toilet system is by installing an exhaust fan. This addition helps to actively remove odors and moisture from the chamber, creating a more pleasant experience for users while also optimizing conditions for microbial activity. Additionally, some models offer adjustable fan speeds, allowing you to regulate airflow based on your specific needs.

4. Maintenance

When it comes to choosing the best composting toilet, maintenance is a crucial factor to consider. These eco-friendly toilets offer an alternative solution for households looking to reduce their water consumption and minimize their environmental impact. However, proper maintenance is essential to ensure these systems function effectively and odor-free.

One important aspect of maintenance is understanding the composting process itself. It’s vital to strike the right balance between carbon-rich materials such as sawdust or shredded paper and nitrogen-rich waste like human excrement. This balance helps promote microbial activity, which breaks down the waste into safe compost for disposal. Regularly monitoring this balance and adjusting as necessary will prevent any potential issues in your composting toilet system.

5. Local Regulations

When it comes to choosing the best composting toilet for your home, you may have come across various recommendations and suggestions. However, it is essential to consider local regulations before making a final decision. Local regulations play a significant role in determining the type of composting toilets that are permissible in your area. These regulations usually outline specific requirements such as separation distances from water sources, minimum capacity, ventilation standards, and disposal guidelines.

In addition to understanding the local regulations surrounding composting toilets, it is crucial to stay updated on any changes or updates that may occur. As environmental concerns continue to grow and governments reevaluate their policies, regulations regarding composting toilets can change over time. By staying informed about these changes and adhering to the latest guidelines set by your local authorities, you can ensure that you are acting in accordance with the law while also implementing sustainable waste management practices.

6. Budget

Choosing the best composting toilet for your budget can be an overwhelming task. With so many options available, it’s important to consider both the upfront cost and long-term savings. While some composting toilets may have a higher price tag initially, they could save you money in the long run through reduced water usage and fertilizer production. Additionally, it’s crucial to look at the maintenance costs of each option. Some models may require more frequent emptying or additional supplies, which could add up over time.

When identifying your budget for a composting toilet, don’t forget to factor in any installation costs as well. Some models may require professional installation, while others can be easily installed by homeowners. In these cases, choosing a DIY-friendly model might be a smart choice if you’re looking to save on labor expenses.

Lastly, consider the warranty offered by different manufacturers when making your decision. A longer warranty period usually indicates that the brand stands behind their product’s durability and performance, giving you peace of mind that you won’t end up with unexpected repair or replacement expenses down the line.

It’s a good idea to read reviews, compare features, and, if possible, visit showrooms or tiny house communities to see different composting toilet models in action before making your final decision. Ultimately, the best composting toilet for your tiny house will be one that meets your specific requirements and suits your lifestyle.

frequently asked questions

How does a composting toilet work in a tiny house?

A tiny house composting toilet is a clever and innovative way to tackle the issue of waste management in small living spaces. Unlike traditional flush toilets, which require water and sewer connections, composting toilets operate using natural processes to break down human waste into usable compost. These toilets consist of three main components: a solid waste bin, an air vent system, and organic material such as sawdust or peat moss. When you use the toilet, a layer of organic material is sprinkled on top to aid in decomposition and control odor.

The magic behind the functioning of a composting toilet lies in nature’s own power of decomposition. The combination of oxygen-rich air flowing through the ventilated system and the presence of beneficial bacteria creates an ideal environment for breaking down waste into nutrient-rich soil over time. This natural process chemically alters feces and urine, converting them into safe materials that can be used as fertilizer for gardens or landscaping projects. With this sustainable solution, you not only eliminate the need for water supply and sewage disposal systems but also contribute to a more earth-friendly lifestyle by reducing your ecological footprint.

Is it OK to urinate in a composting toilet?


While some people might feel hesitant about peeing in their composting toilet, thinking that it could create unpleasant odors or hinder the composting process, this couldn’t be further from the truth. When combined with carbon-rich materials like sawdust or coconut coir, urine can actually help balance the carbon-to-nitrogen ratio essential for successful composting. Moreover, urine also helps maintain moisture levels within the pile and prevents it from becoming overly dry.

So next time you find yourself wondering if you should pee in your tiny house’s composting toilet, don’t hesitate! Embrace this natural fertilization process that allows your waste to be transformed into nutrient-rich soil amendment for gardening or landscaping purposes. By utilizing both solid and liquid waste in your composting toilet system, not only are you minimizing water usage but also maximizing sustainability and resource efficiency

What happens if you have diarrhea in a composting toilet?

One of the joys of living in a tiny house is embracing sustainable solutions, and composting toilets are becoming increasingly popular in this regard. However, what happens if you find yourself dealing with diarrhea while using a composting toilet? Well, fear not, as these innovative waste management systems are designed to handle such situations.

Composting toilets typically consist of two compartments: one for solid waste and another for liquid waste. When you have diarrhea in a composting toilet, the excess liquid will drain into the liquid compartment. This liquid is known as leachate and poses no harm to the environment when disposed of properly. It’s important to follow instructions on how to manage leachate from your specific composting toilet model to ensure safe disposal.

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