Tirupur, the textile knitwear hub of India discharges about 100 MLD of dyestuff effluents with high salt content and multi colored effluents from as early as 1990s. It flanks and pollutes the Noyyal river course rendering it as a virtual effluent course as rainfall is hardly for 15 days only in a year.

In the textile knitwear manufacturing city of Tiruppur, Tamil Nadu, the ZLD project in their CETPs was propelled by a judicial directive and launched with great expectations way back in 2005.