Welcome to South Water Alliance Private Limited (SWAPL), a cutting-edge 15 MLD desalination plant located in Mullaikadu Village, Thoothukudi. Established to address rising industrial water demand and reduce pressure on the Thamirabarani River, SWAPL transforms abundant seawater into high-quality desalinated water, ensuring a reliable supply for regional industries. Strategically positioned along the Bay of Bengal, we support consistent industrial growth, promote water security, and contribute to the region’s socio-economic development. Committed to sustainability, SWAPL empowers industries while preserving vital freshwater ecosystems for future generations.
About Us
Advancing Industrial Strength Through Water Sustainability
Pioneering Empowerment
India’s First All-Women Operated Desalination Plant
At SWAPL, we are proud to be India’s first desalination plant operated entirely by women — a groundbreaking achievement that embodies our commitment to empowerment and inclusivity. By entrusting the complete operations to an all-women team, we are not only setting new standards in the water industry but also inspiring change across sectors. This pioneering initiative reflects our belief that true progress is driven by diversity, equal opportunity, and the unwavering spirit of women leaders. Through this milestone, we reaffirm our dedication to building a future where sustainability and social impact go hand in hand.
Our Impact
Securing Thoothukudi’s Water Future
With a population of over 579,000 and rapidly expanding industrial activities, Thoothukudi’s total daily water demand surpasses 180 MLD. Before SWAPL, industries heavily relied on limited freshwater sources, competing directly with domestic and agricultural needs.
By providing a sustainable supply of high-quality desalinated water, SWAPL relieves pressure on precious freshwater reserves, supports uninterrupted industrial operations, and helps ensure water security for the community. Our presence enables balanced regional growth while protecting vital resources for future generations.
MLD
78
Domestic Use
MLD
35
Power Plants
MLD
40
Chemical Industries
MLD
30
Other Industries
MLD
183
Total Requirement
What We Deliver
We provide a reliable supply of high-quality desalinated water to support thriving industries. Driving sustainable growth while protecting vital freshwater resources for the future.
15 MLD of high-quality desalinated water, significantly reducing stress on the Thamirabarani River and safeguarding freshwater resources.
Over 100 direct and indirect jobs created, empowering the local community and supporting economic development.
Eco-friendly industrial growth in Mullaikadu promotes sustainable development in the region.
Reliable and consistent water supply to surrounding industries, enabling uninterrupted operations and long-term growth.
Desalination Plant
| pH | 6.9 - 7.9 | |
| Turbidity | NTU | 0 |
| Conductivity | Micro siemens/cm | 25 |
| Chlorides as Cl | ppm | 20 |
| Silica as Sio2 | ppm | 0.02 |
| Total Fe | ppm | 0.3 |
South Water Alliance Private Limited (SWAPL)
Delivering sustainable, high-quality desalinated water to power industrial growth in Thoothukudi. Committed to building a water-secure, eco-conscious future for the region and beyond.
FAQ
Frequently Asked Questions about SWAPL
The plant was commissioned in August 2024 and began commercial operations in January 2025.
Our plant is located in Mullaikadu Village, Thoothukudi,
Tamil Nadu, along the Bay of Bengal coastline.
Yes, SWAPL is proud to be India’s first desalination plant operated entirely by women, promoting empowerment and inclusivity.
We use energy recovery turbines (ERT) to save power, ensure safe brine discharge 2.1 km into the sea, and continuously monitor marine impact.
By providing a stable industrial water supply, we support continuous industrial activity, attract investment, and encourage eco-industrial growth in the region.
Further Queries About SWAPL?
Our team is ready to assist and guide you
toward sustainable water solutions.
Contact us