At plant, they clean city's dirty water through many steps, no? First they take out big rubbish, then let mud settle, then use some process with air and bacteria, last they put some medicine like chlorine. But I will tell you, that "treated" water they send to our farms is still salty and weak, makes soil hard over years. So all those steps are good in book, but for my onion crop, it is not so sweet... I know because my farm near Sarigam has used this water for eight years now.
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