Tata Swach was designed by Tata Research , Development and Design Centre ( TRDDC ) and Tata Chemicals with contributions from other Tata group companies . In 2004 the company developed a water purifier called '' ' Sujal ' '' . Tata Consultancy Services deployed thousands of these filters in the Indian Ocean tsunami disaster of 2004 as part of its relief activities
Indian Ocean tsunami disaster of 2004
2004 Indian Ocean earthquake and tsunami
Tata Swach