Bali's Groundwater Is Running Out, and Tourism Is the Biggest Draw
On a good morning in Uluwatu, water flows through the government supply pipes for about an hour. Kadek Siska, 35, and her mother keep the taps open so they can hear when it starts, then rush to fill every container in the house. When the pipes run dry, they call one of the numbers painted on passing water trucks. A 5,000-litre delivery costs around 350,000 rupiah, and water can consume a tenth of a household's monthly income. A short drive away, a single luxury resort receives eight to ten of those same trucks each day.
Those two images sit at the heart of a water crisis that the Bali-based NGO IDEP Foundation first declared in 2018 and that has only deepened since. According to IDEP's research, a tourist staying in a resort uses between 2,000 and 4,000 litres per day for pools, laundry, gardens and hotel operations. The average Balinese resident manages on 30 to 50 litres.
A Thousand-Year System Under Pressure
Bali's traditional answer to water scarcity was the subak, a community irrigation cooperative dating to the ninth century. Part temple council and part farming guild, subaks govern when water flows, who receives it, and in what sequence, guided by offerings to the water goddess Dewi Danu and a philosophy that treats water as a shared gift rather than a commodity. UNESCO recognised the system as a world heritage site in 2012.
That system depends on rice fields. A flooded paddy slows runoff, stores water and recharges the aquifer beneath it. Seal it under concrete and that function disappears permanently. According to the Bali national land agency, the island lost more than 6,500 hectares of rice fields in just the past five years, a decline of over 9%. A 2018 Transnational Institute report, cited by The Guardian, estimated Bali had already shed nearly a quarter of its agricultural land as tourism grew by 330% over the preceding 25 years. In Canggu alone, farmland has declined by 60% while land under development has increased by 69%.
Aquifers Beyond Their Limits
In southern Bali, where development is concentrated, groundwater extraction has pushed aquifers past sustainable levels in many areas, according to research by IDEP and local hydrologists. Seawater is moving inland to fill the void; IDEP has documented intrusion in at least six of the island's nine districts. Coastal wells are turning brackish.
Much of the extraction feeds a tanker-water industry that IDEP estimates involves roughly 10,000 businesses, about half of which operate illegally or without proper permits. The Bali provincial government states that commercial groundwater extraction requires a permit and that household borewells cannot legally be repurposed for commercial sale, but enforcement has been inconsistent, and the province did not provide figures on how many licensed operations currently exist.
Senator Niluh Djelantik, who represents Bali in Indonesia's regional representative council, is calling for a moratorium on new hotel construction and stricter enforcement of extraction rules. She points to a shift in the permitting process as a root cause: a national online system now allows investors to apply remotely, bypassing the community consultation that once required developers to seek neighbours' agreement before breaking ground.
Why It Matters for Hosts
Independent operators in Bali face both a practical and a reputational challenge. Water supply is increasingly unreliable across southern districts, and reliance on tanker deliveries adds real cost and operational uncertainty. Hosts who invest in rainwater harvesting, greywater recycling, or low-flow fixtures can reduce that exposure and credibly communicate their approach to guests who are paying closer attention to resource use. Documenting and sharing concrete water-saving measures is also a meaningful point of difference in a market where many properties make vague sustainability claims. Connecting with a local subak or supporting land conservation nearby is one of the few actions that addresses the structural problem rather than just managing its symptoms.
The details in this post were first reported by The Guardian in a July 2026 investigation by Christian Karim Chrobog. This post is published by the Qontaktly travel blog.
First reported by Bali Travel.