Dr. Urine

Welcoming 2026 with Hope, Innovation, and Sustainability 2025 was a year of growth, collaboration, and innovation. From expanding awareness of sustainable sanitation practices to empowering communities with data-driven decision tools, HSSI continued to support global efforts toward cleaner, safer, and more equitable sanitation systems. Thank you for being part of this journey. Your insights, feedback, and enthusiasm fuel our mission. Together, we’re shaping a future where san

Hashemi’s Sanitation Sustainability Index (HSSI), featured by Encyclopedia MDPI, offers a practical framework to evaluate sanitation systems before construction. By combining technical, economic, and social indicators into a 0–1 score, it helps communities choose sustainable solutions. A Seoul case study showed resource-oriented sanitation scoring higher than septic tanks, proving more viable in recycling and economics, while highlighting the importance of community acceptanc

As we mark World Toilet Day, this year’s theme, “Sanitation in a Changing World,” prompts us to consider more than just the provision of toilets. It urges us to ask a more pressing question: “How can we ensure that our sanitation systems remain genuinely sustainable for the future?” With less than five years left until 2030 and two billion people still lacking access to safe sanitation, the challenge is daunting and requires urgent attention from all stakeholders. According t

Innovative Approaches Toward a Healthy and Sustainable Environment, edited by Dr. Shervin Hashemi, presents solutions for air, water, food, and waste management. It explores sustainable practices like advanced water treatment, eco-friendly farming, and waste recycling, offering practical strategies and real-world examples to inspire action for a healthier, more sustainable future.

Happy New Year 2025! As we step into this new year, may it be filled with joy, growth, and purpose. Let us celebrate the opportunities...