Dyeing Units Defy ZLD Deadline, Pollution Persists

As of February 16, 2026, a significant number of dyeing units in the city have failed to comply with the mandatory Zero Liquid Discharge (ZLD) technology deadline, which passed in December. Nineteen scattered dyeing units are reported to be still in the process of implementing ZLD, raising concerns about the Punjab Pollution Control Board's (PPCB) enforcement capabilities.

The PPCB had previously mandated that all such units either install ZLD systems or cease operations within the city. This directive followed findings that untreated industrial wastewater was being discharged into sewer systems, overwhelming sewage treatment plants and contributing to the pollution of the Buddha Nullah.

While some units have complied by installing ZLD, closing operations, or relocating, others are delaying. Of the large-scale units, two adopted ZLD and two closed wet processes, with one unit challenging the directive in court. Among smaller units, 12 have shut down or moved, but 19 remain non-compliant.

Environmental advocates argue that enforcement has been lax despite clear timelines, especially as the matter is under review by the National Green Tribunal. The PPCB has confirmed personal hearings with industrialists and stated that notices have been issued to three non-compliant units, while others are seeking extensions.