<figure><img width="1400" height="1050" src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/2022110811110/636a28a59c7e80680e045883jpeg.jpg" alt=""/><figcaption>Photo: SONIA AWALE</figcaption></figure>For someone who jet sets around the world, hobnobbing with governments and scientists to promote affordable and ecological toilets, Roshan Shrestha found out for himself just how difficult maintaining loos can be during a recent visit to his home in Nepal.The Seattle-based 55-year-old sanitation expert (pictured below) found that the septic tank at his family home below Swayambhu was overflowing. But he had no clue who to turn to, and <a href="https://www.nepalitimes.com/opinion/where-to-take-a-dump/" target="_blank" rel="noopener">how to get it emptied</a>. “I did not know where to go,” recalled Shrestha during a break at a Faecal Sludge Management Conference last week in Cape Town. “If it was so difficult for me, I can only imagine how hard it must be for the general public.”Read also: <a href="https://www.nepalitimes.com/banner/toilet-trained/" target="_blank" rel="noopener">Toilet trained</a>, Sonia Awale<a href="https://www.nepalitimes.com/opinion/where-to-take-a-dump/" target="_blank" rel="noopener">Where to take a dump</a>, Bhushan TuladharShrestha finally got in touch with a private service provider and got the problem fixed after a few days. With over 30 years of experience in improving sanitation, Shrestha was promoted last month as Deputy Director of the Urban Sanitation Markets at the <a href="https://www.gatesfoundation.org/" target="_blank" rel="noopener">Bill and Melinda Gates Foundation</a> (BMGF).Shrestha is a leading authority in the field, and involved in the BMGF’s <a href="https://www.gatesfoundation.org/What-We-Do/Global-Growth-and-Opportunity/Water-Sanitation-and-Hygiene/Reinvent-the-Toilet-Challenge-and-Expo" target="_blank" rel="noopener">Reinvent the Toilet Challenge</a> that has scientists around the world competing for the best design of a new generation of <a href="https://www.nepalitimes.com/banner/toilet-trained/" target="_blank" rel="noopener">toilets</a> that do not use water, are cheap to install and easy to operate.Shrestha has been recognised for promoting water and sanitation projects in Nepal with his new responsibility at the BMGF, a philanthropic arm of the founder of Microsoft.Says environmental expert Bhushan Tuladhar: “Roshan is passionate about sanitation, and does not treat it as just another job. He has great commitment and perseverance. His success is well deserved and it is only fitting that the foundation has recognised it.”Read also: <a href="https://www.nepalitimes.com/banner/getting-our-shit-together/" target="_blank" rel="noopener">Getting our shit together</a>, EditorialThe Gates Foundation’s Brian Abrogast said of Shrestha’s promotion: “Roshan Shrestha has been the best ambassador the foundation could ask for, exuding respect and compassion while generating admiration – and impressive results.”The BMGF’s toilet challenge has prompted top scientists from China, India and other parts of the world to come up with innovative new designs, from solar-powered smart toilets that generate hydrogen and electricity to sanitation systems that convert human waste into biological charcoal, fuel gas, minerals and clean water.Shrestha had humble beginnings in a public school in Kathmandu before getting an MSc from Tribhuvan University in 1988. He worked in a water analysis laboratory to test the water in the Bagmati River. And later founded <a href="http://enpho.org/" target="_blank" rel="noopener">Environment and Public Health Organisation</a> (ENPHO) that specialises in research and monitoring. Later, he got a PhD from a university in Austria in limnology, the study of inland water bodies. On his return, Shrestha successfully marketed the popular water purifier called Piyush.Shrestha went on to introduce Nepal’s first wetland system in Dhulikhel for small-scale wastewater treatment and reuse, and designed Nepal’s first faecal sludge treatment plant in Teku in 1998.“It was at this point that I realised that water quality would never improve without upgrading sanitation. At the root of water pollution is poorly managed sanitation,” said Shrestha, who then became involved in <a href="http://archive.nepalitimes.com/article/nation/dont-wait-for-melamchi-nepal,3765" target="_blank" rel="noopener">rainwater harvesting</a> and turned his residence into a model eco-home complete with urine diversion dry toilet.After a stint at UN HABITAT as a South Asia region technical adviser, he was convinced toilet technology had to be less water-intensive to improve sanitation in the developing countries. “We claim to have over 90% <a href="https://www.nepalitimes.com/banner/getting-our-shit-together/" target="_blank" rel="noopener">latrine coverage in Nepal</a> but most structures do not meet required standards, and that is why we need a new breakthrough in toilets,” said Shrestha.The Gates Foundation has invested heavily in developing new  technologies that can destroy pathogens on site through faecal sludge management.“If a vast country like India can clean up its act, why can’t Nepal? All we need is political will and proactive leadership committed to improving sanitation,” adds Shrestha, whose foundation is currently developing a new course on sanitation at Kathmandu University, and working with Nepal Bureau of Standards on a new <a href="http://archive.nepalitimes.com/news.php?id=15235#.XHfVCMAzaUk" target="_blank" rel="noopener">toilet</a> standard.Here in Cape Town at the global conference he helped put together,  Shrestha says his goal is still to go back to Nepal: “I plan to head home, but after we have developed an adaptable technology for safer sanitation in developing countries so we can promote it in Nepal as well.”

Sonia Awale

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Toilet trained expert

<figure><img width="1400" height="1016" src="https://superdesk-pro-c.s3.amazonaws.com/sd-nepalitimes/20221107111148/6368e2aa9c7e80680e03333ejpeg.jpg" alt=""/><figcaption>RAW FOOTAGE: A drainage pipe emptying raw sewage into the Manohara River in Kathmandu on Thursday morning. Swollen with overnight rain, the river carried human excreta, dead animals, plastic bottles and other refuse just upstream from its confluence with the Bagmati. Pic: Bikram Rai</figcaption></figure>After a <a href="http://archive.nepalitimes.com/news.php?id=16988#.WxoJx-6FO70" target="_blank" rel="noopener">cholera epidemic swept Jajarkot</a> in 2010 killing 300 people, mostly children, the government was jolted to action. With help from UNICEF, it launched a campaign to make all of Nepal’s districts open defecation free. The drive has saved many thousands of lives. A toilet is no longer just a place to relieve oneself, it has become a health facility. At the end of another National Sanitation Week, three more districts including Lalitpur have been declared open-defecation free. Nearly 97% of Nepali households now have latrines.Read also: <a href="https://www.nepalitimes.com/banner/toilet-trained/" target="_blank" rel="noopener">Toilet trained</a>, Sonia AwaleThe campaign has shortcomings: many toilets are poorly maintained and lack water supply. However, Siddhi Shrestha of UNICEF says, “Nepal’s progress in sanitation is a global success story. It changed the mindset of people, a toilet at home became a matter of pride, more than just infrastructure.”The <a href="https://www.nepalitimes.com/editorial/poor-health/" target="_blank" rel="noopener">health outcome has been dramatic</a>. In 2011, nearly 7,000 children in Nepal died of diarrhoeal dehydration, and it was the third biggest killer of children under five. By last year, that figure dropped to less than 1,000.But Bhusan Tuladhar of UN-Habitat has a word of caution: “While we celebrate Nepal’s success we now need to also work on managing what has accumulated in the toilets.”Read also: <a href="https://www.nepalitimes.com/opinion/where-to-take-a-dump/" target="_blank" rel="noopener">Where to take a dump?</a>, Bhushan TuladharIndeed, pit latrines and urban sewage have now become serious health hazards across Nepal.Kathmandu is one of 22 remaining districts still not open defecation free. The capital’s breakneck and haphazard growth has poisoned its rivers and turned the air toxic – making the city a symbol of governance failure. There are token cleanups and slogans, but no political will to address the crisis. Smart cities are those which treat and recycle their waste. Kathmandu is not a smart city, it has become ugly and dangerous for its inhabitants.Read also: <a href="https://www.nepalitimes.com/editorial/getting-our-shit-together/" target="_blank" rel="noopener">Getting our shit together</a>, Editorial Nepal urgently needs sewage treatment plants, and a mechanism for the removal, recycling and disposal of faecal sludge. In the absence of government initiatives, private entrepreneurs across the country are stepping in to set up collection services, and produce biogas and fertiliser from waste.Says Bipin Dangol of the Environment and Public Health Organisation (ENPHO): “It is time to think beyond toilets. Unless human excreta is safely disposed, we will continue to face health risks.”Read also:<a href="http://archive.nepalitimes.com/article/nation/%20jajarkot-open-defecation-free,2023" target="_blank" rel="noopener">Learning the hard way</a>, Sahina Shrestha

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