The company PT ITDC Nusantara Utilitas is the first in Indonesia to receive permission from the Indonesian Ministry of Maritime Affairs and Fisheries to use seawater for non-energy purposes. It will process it into clean, potable water. The project is aimed at supplying The Nusa Dua tourist area in Bali.
The permission granted limits the volume of seawater intake to 2,555,000 cubic meters per year — equivalent to 7,000 cubic meters per day. The resulting water is planned to be directed to hotels and other residents of the Nusa Dua area for everyday infrastructure needs.
The technology stated is reverse osmosis of seawater: water passes through membranes under pressure, which allows for the separation of salt and the production of fresh water. The Indonesia Tourism Development Corporation emphasizes that the project should reduce the territory's dependence on underground sources and aligns with environmental management standards.
The ministry notes that coastal tourist areas face increasing demand for water in peak seasons and risks associated with limited underground reserves and the salinization of coastal aquifers. Therefore, the emergence of a legal scheme for the intake and processing of seawater is seen as a step towards more sustainable supply of resort areas.
Desalination for Nusa Dua has been under discussion for several years. Back in 2021, the Indonesia Tourism Development Corporation's structure announced investment plans for the installation of reverse osmosis and distribution networks, and in early 2025 — agreements for test water supply to several hotels in Nusa Dua with total volumes of several thousand cubic meters per day. Now the volume is officially increased.
Sources: Antara, wartabalionline.com
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