George Ford kicked all of Bath's points as the Somerset side beat local rivals Exeter Chiefs 21-16 at the Recreation Ground on Saturday.
Ford contributed six penalties and a drop goal, while Dean Mumm and Damian Welch scored tries for Exeter, who had to settle for a losing bonus point.
Gary Gold's men, who have now recorded eight straight wins, remain third in the Aviva Premiership.
Meanwhile, Exeter are seven points further back in sixth.