As the initial portion of the canal runs through the highly industrialized and urbanized areas of Erode Municipal Corporation, the discharge of untreated effluents from the textile dyeing units and leather tanneries introduce major pollutants.[8] To prevent mixing of sewage into the canal, Government of Tamil Nadu plans to build concrete walls on the sides and an additional canal of 15 kilometres (9.3 mi) has been constructed alongside the main canal to carry the sewage. The entire stretch of first 30 km (19 mi) of the canal running through Erode Municipal Corporation is proposed to be provided with concrete lining in a phased manner.[9][10] Navigable roads were developed along the banks throughout this stretch to reduce access to the canal.[11][12]