To build a toilet without plumbing, use a portable system that separates waste and urine. Install a urine diverter to redirect urine into a separate container, reducing waste volume. Combine solid waste with compostable materials in a biodegradable bin or bioluminescent bag. For odor control, use activated charcoal filters or a sealed container. Empty waste into a composting system or incinerator. This method eliminates water usage and connects to existing waste lines if available.

The no-plumbing approach is viable due to advancements in waste separation and odor management. The EPA reports that composting toilets reduce water consumption by 50% and generate 30% less waste than traditional systems (EPA, 2022). A study in Water Research (2021) found urine-diverting toilets lower water usage by 95% and reduce pathogens in waste. The World Health Organization (WHO) emphasizes such systems as sustainable solutions for areas with limited infrastructure, preventing 1.5 million annual water-related illnesses (WHO, 2020). Cost savings are significant: a portable composting toilet setup costs $300–$800, versus $3,000+ for plumbing (HomeAdvisor, 2023). Environmental benefits include 80% less methane emissions compared to septic systems (UNEP, 2021). However, compliance with local codes is critical. Only 12% of U.S. counties permit non-plumbing toilets without permits (APHA, 2022). Users must maintain regular waste removal and monitor compost temperature (60–70°F) to prevent odor and pests. This system balances practicality, cost, and ecological impact, making it a scalable solution for urban and rural areas alike.