There is a resident who steals water in the jurisdiction of my property management company, and there is no water meter at home, so it can be judged as stealing water.

According to legal procedures, your company should keep the evidence, and then call the police and report it to the water department.

Whether the household's behavior is illegal and what punishment should be accepted is the function of judicial organs and water departments, and property companies have no right to deal with it or impose fines. However, the property can be held accountable for the losses caused by households stealing water.