Pressure tank fills after very little water is used Home › Forums › Archives › Old Bulletin Board Archives › Pressure tank fills after very little water is used This topic has 0 replies, 1 voice, and was last updated 24 years, 7 months ago by tm61079. Viewing 0 reply threads Author Posts 5 Oct 1999 at 5:50 am #285115 tm61079 The pressure pump comes on seconds after you turn on a tap or flush the toilet. Author Posts Viewing 0 reply threads The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.