They found that although the company had built an advanced facility for treating waste water, it was not used at night, when untreated waste was released into the river.
Mereka menemukan bahwa meskipun perusahaan telah membangun sebuah fasilitas canggih untuk mengobati air limbah, itu tidak digunakan pada malam hari, ketika limbah tidak diobati dilepaskan ke sungai.