Why do people frequently urinate in cold weather?

The inability of our body to sweat, as it does not have enough energy to cause sweating. The muscular contraction caused by the cold, particularly of the bladder, which causes the production of more urine.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.