Re: Who checks the water bills? › Flat Chat Strata Forum › The Professionals › Who checks the water bills? › Current Page 15/08/2017 at 8:27 am #27890 PamsterFlatchatter Another reason for the increased water bill could be residents washing their cars, and inviting non residents / friends to wash their cars on your property as well. This could especially be the case if your complex has a designated car wash bay.