The ruling on food scraps mixing with the sewage system when washing dishes

A message reached the program from one of the brothers (M. M. F.) in al-Qassim. Our brother asks and says: You know that all kitchens have sinks, and the water from our kitchen utensils and the sink drains into the sewage system. Sometimes pieces of food scraps are with it. What is your opinion on this? And how do you guide people?
Answer: It is obligatory for whoever cares for the kitchen to be careful to keep away what may be meat or pieces of bread or other food so that it is in another place, either in boxes that are taken to the desert where birds and animals eat from them, or in other clean places where these scraps are put, or on their rooftops and in their yards and the like.
As for what concerns washing the utensils of traces of grease and the like, its draining into the sewage system does no harm; because this is not food and not something eaten, it is only the remains of grease. And if something is neglected unintentionally from some of the things he did not intend and did not aim for, there is no blame on him, if Allah wills. Rather, he must be cautious and strive to keep the remaining food in one place, preserved in a part of his house or in other places in the desert... the remaining bread or meat or rice or other things are moved to places far from filth, like the yards that animals and birds come to, or the desert and the like. And what concerns washing the utensils and the like, its draining into the sewage system does no harm. Yes.