The Defence Research and Development Organisation (DRDO) has developed a portable seawater desalination system called SWaDeS (Seawater Desalination System) at its Defence Laboratory in Jodhpur, Rajasthan. The system comes in two variants: a manual version and an engine-operated version, making it versatile for field deployment in remote and conflict-affected areas. SWaDeS is capable of converting highly saline seawater with a Total Dissolved Solids (TDS) concentration of up to 35,000 mg/L to potable water with TDS below 500 mg/L, which meets WHO and BIS drinking water standards. The system uses a Reverse Osmosis (RO) process combined with pre-treatment filtration, making it suitable for deployment in naval operations, coastal disaster relief, and high-altitude military posts. A notable application of SWaDeS has been demonstrated at Pangong Tso, the high-altitude lake located at 4,350 metres in Ladakh, where brackish water has been successfully converted to potable water for troops stationed there. The Jodhpur Defence Laboratory (DL Jodhpur) is a specialised centre under DRDO known for research in desert warfare technologies, camouflage, and survivability systems. The Rajasthan connection makes this development particularly significant — a desert-based lab solving a water scarcity problem for both coastal and high-altitude environments. SWaDeS is compact, lightweight, and can be transported in military vehicles, enhancing the operational resilience of troops in remote areas. The system is expected to be deployed widely across the Indian Army and Navy, and may also have civilian applications in disaster relief and remote community water supply.
DRDO SWaDeS: Jodhpur Lab Develops Portable Seawater Desalination System
DRDO Jodhpur lab developed SWaDeS portable desalination system converting 35,000 mg/L saline water to under 500 mg/L potable water. Two variants (manual and engine-operated) successfully tested at Pangong Tso.
Key facts
- DRDO's Defence Laboratory Jodhpur developed SWaDeS — a portable seawater desalination system with manual and engine-operated variants.
- SWaDeS converts water with TDS up to 35,000 mg/L (saline seawater) to potable water with TDS under 500 mg/L, meeting WHO standards.
- Uses Reverse Osmosis (RO) technology with pre-treatment filtration — suitable for naval operations, coastal relief, and high-altitude posts.
- Successfully demonstrated at Pangong Tso lake in Ladakh at 4,350 metres altitude for troops stationed there.
- Rajasthan angle: developed at DL Jodhpur, a DRDO centre known for desert warfare, camouflage, and survivability research.
- Compact and vehicle-transportable, enhancing operational resilience for Indian Army and Navy in remote deployments.
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Source: PIB/DRDO
Frequently asked questions
What is DRDO SWaDeS and where was it developed?
**SWaDeS (Seawater Desalination System)** is a portable desalination system developed by DRDO's **Defence Laboratory Jodhpur (DL Jodhpur)** in Rajasthan. It comes in two variants — **manual** and **engine-operated** — making it adaptable for diverse field conditions including naval operations, coastal disaster relief, and high-altitude military posts.
What are the technical specifications of the SWaDeS desalination system?
SWaDeS converts saline water with **TDS up to 35,000 mg/L** (equivalent to standard seawater salinity) into potable water with **TDS below 500 mg/L**, meeting WHO and BIS drinking water standards. It uses **Reverse Osmosis (RO)** technology combined with pre-treatment filtration. The system is compact, lightweight, and vehicle-transportable.
Where has SWaDeS been tested and what is its strategic significance?
SWaDeS was successfully demonstrated at **Pangong Tso lake in Ladakh** at an altitude of **4,350 metres**, where it converted brackish lake water to potable water for Indian troops. Strategically, it enhances operational resilience for soldiers stationed in remote, water-scarce areas along India's northern borders.
What is the Rajasthan connection to DRDO SWaDeS?
SWaDeS was developed at **DL Jodhpur (Defence Laboratory Jodhpur)**, a DRDO centre in Rajasthan specialised in desert warfare technologies, camouflage materials, and military survivability systems. Notably, a lab in India's desert state solved water scarcity for both high-altitude and coastal environments — a testament to DRDO's interdisciplinary capabilities.
What are the civilian applications of SWaDeS beyond military use?
Beyond military deployment, **SWaDeS** has potential civilian applications in: **coastal disaster relief** during cyclones and tsunamis, **remote community water supply** in islands and coastal villages, and **industrial emergency water provision**. Its portability and ease of operation (manual variant requires no fuel) make it suitable for rapid humanitarian deployment.
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