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Jack Sim

Jack Sim is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Jack Sim rather than just read about it. In short: Jack Sim Juek Wah (born 1957), also known as Mr Toilet, is a Singaporean entrepreneur and philanthropist who is the founder of the World Toilet Organization and World Toilet Day initiative. He is also the founder of the Restroom Association of Singapore.

Jack Sim — main illustration
Jack Sim — illustration

Key takeaways

  • Jack Sim belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Jack Sim to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Jack Sim from memory before moving on to harder problems.

Reference excerpt

Jack Sim Juek Wah (born 1957), also known as Mr Toilet, is a Singaporean entrepreneur and philanthropist who is the founder of the World Toilet Organization and World Toilet Day initiative. He is also the founder of the Restroom Association of Singapore. Sim started a number of successful business ventures before venturing into charitable work in his early forties. In 2001, he founded the World Toilet Organisation (WTO), an international non-governmental organisation for sanitation. After lobbying efforts with Singapore's Ministry of Foreign Affairs, the founding date of WTO was later adopted as World Toilet Day by the United Nations in 2012. Sim's leadership of the WTO includes humanitarian, developmental, and advocacy work for sanitation. Sim graduated with a Master of Public Administration from the Lee Kuan Yew School of Public Policy at the National University of Singapore in 2011. He is currently an adjunct associate professor at the university's business school.

Early life and education Sim was born the second of three children in 1957 to a grocery store assistant and a beautician, Tan Siam Kheng. His family lived in an impoverished village in Upper Serangoon without a plumbing system. He studied at Kim Keat Primary School and Whitley Secondary School, doing poorly academically and later failing his O-level secondary school examinations. He attributes his academic difficulties to attention-deficit hyperactivity disorder. He later enrolled in the Vocational and Industrial Training Board (now the Institute of Technical Education), graduating with a certificate in hotel management. As an adult, he completed professional courses from the University of Strathclyde and Harvard University. In 2013, he received a Masters of Public Administration degree from the Lee Kuan Yew School of Public Policy at the National University of Singapore. He was thereafter appointed an adjunct associate professor at the NUS Business School and an honorary professor at Shohbit University in Uttar Pradesh, India. In 2022, he received an honorary Doctor of the University degree from the University of Strathclyde. He is a fellow of the Singapore University of Social Sciences and the Global Federation of Competitiveness Councils.

Business career After leaving school, Sim worked as a construction site supervisor and salesperson at Diethelm (now DKSH) before starting a business at 24. In 1982, he started Besco Building Supplies, which manufactured building materials. By his early 40s, he had expanded his business portfolio to 15 companies, including a toilet cubicle manufacturer and a $115-million tiling factory. He was also involved in real estate investments, at one point owning 15 properties, and was a developer of the Australian International School Singapore. In the late 1990s, Sim watched a speech by then-Prime Minister Goh Chok Tong on the social significance of clean public toilets. By the end of the 1997 Asian financial crisis, he sold off a portion of his businesses and began to volunteer with the Samaritans of Singapore.

World Toilet Organisation In December 1998, he founded the Restroom Association of Singapore, later launching a rating system for the cleanliness of public toilets in collaboration with the National Environmental Agency. On 19 November 2001, he founded the World Toilet Organization as an advocacy group for global sanitation. In his role as director of the WTO, Sim is a lobbyist and coordinator for sanitation efforts, organising an annual World Toilet Summit, and contributing to administrative and policy changes in Brazil, China, India, and Singapore. Sim also lobbied Singapore's Ministry of Foreign Affairs (MFA) to support establishing 19 November as World Toilet Day, which led to Singapore's first-ever tabled resolution at the United Nations in 2012, which succeeded with 120 co-sponsors. Sim raises funds for WTO through hosting the World Toilet Summits and philanthropic grants, including from the Lien Foundation and Gates Foundation. He uses emotional branding, humour, and celebrity endorsements to raise awareness of sanitation issues. Under Sim's leadership, the WTO launched a series of World Toilet Colleges, which ran the world's first toilet-cleaning qualification programme, and which currently provides sanitation training for people in the developing world. He provided humanitarian aid for Turkey after the 2023 Turkey–Syria earthquakes. In 2008, he was appointed to the World Economic Forum's Global Agenda Council for Water Security and the GAC for Social Entrepreneurship. He was appointed co-convenor of India’s Swachh Andhra Pradesh Initiative in 2015. For his work, Sim is also known as "Mr Toilet". The eponymous documentary Mr. Toilet about Sim's activism premiered at North America's largest documentary festival, Hot Docs Canadian International Documentary Festival on 27 April 2019. Sim also worked with Singaporean director Jack Neo in developing the 2013 film Everybody's Business.

Other social ventures In the early 2010s, Sim ventured into social entrepreneurship as a means to diversify revenue for WTO. Sim founded BOP Hub, a non-profit organisation targeting bottom-of-pyramid individuals at the poorest global income margins in 2011, developing a $10,000,000 building in Ubi. In 2016, the organisation engaged in food relief efforts for migrant workers in Singapore, and currently acts as a startup accelerator for social enterprises. He was also involved in bringing Dialogue in the Dark, a global disability social business, to Singapore.

Personal life He lives in Meyer Road, Katong, Singapore. His first marriage in 1989 ended in divorce after a year. He remarried in 1990 and has two sons and two daughters with his current wife. He identifies as having "no religion".

Awards SkillsFuture Fellow (2022) NUS Alumni Award (2021) Tatler Asia's Most Influential (2020) Commonwealth Points of Light Award (2018) Luxembourg Peace Prize for Outstanding Peace Activist (2018) President's Award for Volunteerism and Philanthropy (2016) Synergos Senior Fellow (2012) Reader's Digest Asian of the Year (2011) Channel News Asia Asian of the Year (2009) Time Hero of the Environment (2008) Asian Development Bank Water Champion (2008) Ashoka Fellow (2007) Schwab Foundation Social Entrepreneur of the Year (2006) Ministry of Environment Singapore Green Plan 2012 Award (2004)

… excerpt ends here. Continue reading the full article.

Illustrations

Jack Sim illustration

Worked examples

Example 1 — a first encounter with Jack Sim

Start with the simplest possible case. Write down what Jack Sim claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Jack Sim before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Jack Sim ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Jack Sim

In research
Jack Sim appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Jack Sim in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Jack Sim is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1957 births, Living people, People with attention deficit hyperactivity disorder, so understanding it makes those chapters shorter.
In everyday life
Look for Jack Sim outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Jack Sim in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Jack Sim means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Jack Sim out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jack Sim in simple terms?

Jack Sim Juek Wah (born 1957), also known as Mr Toilet, is a Singaporean entrepreneur and philanthropist who is the founder of the World Toilet Organization and World Toilet Day initiative. He is also the founder of the Restroom Association of Singapore.

Why does Jack Sim matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Jack Sim?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Jack Sim.

Tags

  • 1957 births
  • Living people
  • People with attention deficit hyperactivity disorder
  • Sanitation
  • Singaporean activists
  • Singaporean businesspeople
  • Singaporean people of Chinese descent

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