https://www.vedomosti.ru/technology/news/2009/10/28/mosvodokanal-otkazhetsya-ot-ispolzovaniya-hlora-k-2012-godu?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=mosvodokanal-otkazhetsya-ot-ispolzovaniya-hlora-k-2012-godu