Six billion litres lost daily
Malaysia’s national non-revenue water rate is 34.3% — six billion litres per day, RM2 billion per year. The 31% target for 2025 will not be met. Mexico City’s rate is 40%.
Voda Water WatchResourcesWhy Water Matters
Cornerstone Resource · The Blue GoldWater is the next gold — and Malaysia is not exempt.
Cape Town. Chennai. Yemen. Iran. Mexico City. Five places that ran out of water or are running out now. The drought playbook is no longer hypothetical — it is published, dated, and ready for the next city to follow.
“The wars of the next century will be about water.”
— Ismail Serageldin, Vice President of the World Bank · quoted in Blue Gold (Maude Barlow & Tony Clarke, 2002)
In 2002, Maude Barlow and Tony Clarke published Blue Gold: The Battle Against Corporate Theft of the World’s Water. The thesis was simple. Water consumption was doubling every twenty years — twice the rate of population growth. The world’s freshwater supply was not infinite. And the people most likely to control it would not be its users.
Two decades later, “blue gold” is no longer just a book title. The World Resources Institute’s 2023 Aqueduct Water Risk Atlas places 25 countries — home to a quarter of humanity — under “extremely high” water stress every year. They use up almost their entire renewable water supply, year after year, with no margin for drought.
National Geographic’s April 2010 special issue called it Our Thirsty World. Sixteen years on, the world is more thirsty, not less.
Case Study 02
11,200,000
people without water on a single day
Chennai, India · 19 June 2019
All four reservoirs ran dry on the same day.
India’s sixth-largest city was supposed to receive 830 million litres a day. By the dry summer of 2019, the supply was 525 million. Then on 19 June, the four main reservoirs that fed the city emptied. The day was widely reported by name: Day Zero.
The previous monsoon had delivered just 343.7mm of rain — a 55% deficit against the 757.6mm long-term average. Chennai Metro Water cut supply 40%. Tankers became the city’s lifeline. Satellite imagery from NASA showed the four reservoirs as visible craters in the dry earth.
Sources: CNN · Smithsonian Magazine · NASA Earth Observatory · The Diplomat · Penn Water Center
Case Study 03 · Ongoing
14.5m
without safe drinking water
Yemen · 2017–present
The first nation that may run out of water entirely.
Yemen’s aridity is structural — minimal rainfall, deep aquifer dependence, and groundwater extraction running well above recharge. Conflict accelerated everything. The number of people needing water and sanitation support rose 52% after 2015. By 2017, 14.5 million Yemenis had no safe drinking water.
The consequence was the worst cholera outbreak in modern history: more than 2 million suspected cases and 4,000 deaths since 2017. The International Committee of the Red Cross now refers to Yemen as the most likely candidate to become the first country in the world to run out of water.
Sources: UNDP Yemen · ICRC · Atlantic Council · Carnegie Endowment · Human Rights Watch
Case Study 04 · Ongoing
-81%
rainfall vs historical average, late 2025
Iran · year 6 of drought
A capital city visible from space — for the reservoirs that aren’t there.
By November 2025, Iran was in its sixth consecutive year of drought. Tehran’s feeding reservoirs were drying out at a rate that satellite imagery made visible from orbit. Nineteen dams — up from nine three weeks earlier — were on the verge of drying out, filled to less than 5% capacity.
The World Resources Institute classifies Iran as “extremely high” on the Water Stress Index — meaning 80% to 100% of its renewable water resources are being withdrawn annually. Climate change is one cause. The damming of major rivers and the qanat-replacement industrial agriculture model are the others.
Sources: CNN · Al Jazeera · CSIS · Stimson Center · Yale E360 · Carbon Brief · World Weather Attribution
Case Study 05 · Ongoing
40%
of water lost between plant and tap
Mexico City, Mexico · 2024
A city sinking into the aquifer it can no longer afford to drain.
Greater Mexico City is home to nearly 23 million people. In May 2024, 100% of the metropolitan area was classified under “severe drought.” The Cutzamala water system — which supplies a fifth of the city’s water — reached historic lows.
Two problems compound. The first is straightforward: not enough rain. The second is structural: 40% of treated water leaves the treatment plant but never reaches a household tap. Leaks in the distribution network. The city has shifted increasingly to its underground aquifer — with the literal consequence that the city itself is sinking.
Sources: National Geographic · CNN · Scientific American · NPR · NASA Earth Observatory
The Global Picture
A quarter of humanity, already at the limit.
WRI Aqueduct 2023: 25 countries face extremely high water stress every single year — meaning their populations use up almost their entire renewable freshwater supply on an annual basis, with no margin left for a dry year.
25
Countries at extreme stress
2bn
People in those countries
60%
Of irrigated agriculture, extreme stress
50%
Of world projected stressed by 2050
Qatar tops the WRI list. Lebanon, Israel, Kuwait, the UAE and Saudi Arabia complete the top ten. India ranks 13th — with three times the combined population of every other country in the “extremely high” bracket. Malaysia is not on that list. Yet.
Why Malaysia Should Be Paying Attention
Abundant rain. Abundant rationing.
Malaysia is not in the WRI “extremely high” bracket. The reasons it could end up there are already on the dashboard.
More than half lost in three states
Perlis at 61.5%. Kelantan at 53.7%. Kedah at 51.1%. Three Malaysian states already losing more treated water than they deliver.
RM40 billion in infrastructure debt
BIMB Securities estimates RM40 billion is required over the next 20 years to update and maintain ageing water distribution infrastructure. Budget 2025 allocated RM2.52 billion.
Seven districts, three days, 182 tankers
June 2024: scheduled maintenance at the Sungai Selangor treatment plant suspended supply across KL, Klang, Petaling, Shah Alam, Gombak, Hulu Selangor and Kuala Selangor.
A law most Malaysians have not heard of
SPAH has required rainwater harvesting on qualifying buildings since 2012. Field audits put compliance at less than one in three.
Floods now in Papan, Hilir Perak, Manjung
As of writing, 1,776 Malaysians are displaced across Perak. Malaysia’s paradox: floods and water scarcity, simultaneously.
Why Voda Water Watch Exists
The drought playbook is published. The question is whether we read it.
Cape Town averted Day Zero because it had functional municipal leadership, an alarmed and informed public, and ninety days of warning. Chennai had warning too, and lost. The difference was awareness.
Voda Water Watch exists because Malaysia’s water conversation is not yet at the volume the data warrants. SPAH is mandatory and nobody knows about it. NRW is at 34.3% and nobody is shouting. Three Malaysian states are already at Cape Town-2018 levels of network failure. The Annual Water Outlook will repeat these numbers every January until the public reaches the threshold of caring.
National Geographic ended its 2010 special issue with a line that has only become truer: water is everyone’s business. This platform’s tagline is a deliberate echo. Water is everyone’s business. Watching it is ours.
Citations & further reading
- Maude Barlow & Tony Clarke, Blue Gold: The Battle Against Corporate Theft of the World’s Water, The New Press, 2002.
- National Geographic, Water: Our Thirsty World — April 2010 Special Issue. Includes Barbara Kingsolver’s “Water Is Life”, Tina Rosenberg’s “The Burden of Thirst”, “The Big Melt”, “Sacred Waters”, “Silent Streams”, “California’s Pipe Dream” and “Parting the Waters.”
- World Resources Institute, Aqueduct Water Risk Atlas, updated 2023. wri.org/applications/aqueduct.
- UN Water, World Water Development Report, annual.
- City of Cape Town, “Day Zero” Update Bulletins, 2017–2018.
- Princeton Successful Societies, Keeping the Taps Running: How Cape Town Averted Day Zero, 2017–2018.
- NASA Earth Observatory, Water Shortages in India, 2019.
- International Committee of the Red Cross, The Water Situation in Yemen, ongoing.
- CSIS, Satellite Imagery Shows Tehran’s Accelerating Water Crisis, 2025.
- Carnegie Endowment for International Peace, Yemen’s Crisis of Aridity and Political Collapse, 2025.
- SPAN Malaysia · National Hydraulic Research Institute Malaysia · Ministry of Housing and Local Government · The Star · New Straits Times · The Edge Malaysia · Free Malaysia Today.
Resilience starts at the roof
Rainwater harvesting is one of the few things ordinary households can actually do.
Voda is Malaysia’s patented pump-free, zero-carbon rainwater harvesting system — designed to meet SPAH requirements without electricity, and to make every roof its own small reservoir against Malaysia’s blue-gold future.
Voda Water Watch is operated by Green Master Harvest Sdn Bhd, makers of Voda.