○Household Drainage

     To construct a self-sufficient residence in harmony with nature, addressing household drainage concerns is crucial. The primary sources of household drainage include the washing machine, kitchen, bathroom sink, bath, and toilet. Initially, drainage is fundamentally managed through a natural infiltration system, allowing wastewater to percolate into the ground from a pit dug near the residence. In simple terms, this involves laying gravel or sand in the pit, allowing the wastewater to seep into the ground.

    Clay pipes (ceramic pipes) are used for drainage. These pipes are crafted by firing clay at temperatures exceeding 1000°C. They possess excellent strength, corrosion resistance, chemical resistance, and have a long functional lifespan, making them materials that can naturally return to the environment.

    Using eco-friendly detergents, soaps, and toothpaste is imperative. Soaps and shampoos made from essential oils avoid the use of petroleum-based ingredients or chemicals, ensuring complete decomposition of residues post-drainage. Additionally, ethanol-based disinfectants are viable options. They contain antibacterial elements that help control the proliferation of surface bacteria on the skin. Ethanol is a natural resource made from plants like sugarcane and can be directly reintegrated into the ground while being cultivable as part of a planned approach. Water hotter than 70°C can be used for dishes and clothing. Hot water has properties for sterilization and grease removal, effectively eliminating both dirt and odor. Subsequently, natural-based detergents can be used.

    Regarding toothpaste, commercially available ones primarily comprise chemical substances that do not completely decompose; therefore, these should not be used. Consideration should be given to using substances like xylitol and fluoride in toothpaste. Additionally, brushing with a toothbrush and using dental floss is recommended. Toothbrushes alone clean only about 50% of the teeth, and dental floss is used to clean food particles and dirt between teeth by passing through them. At the very least, performing these two actions after every meal is essential; otherwise, many individuals are prone to cavities.

    In this way, refraining from using any chemical substances and allowing wastewater to infiltrate into the ground prevents soil contamination.