How can I increase water pressure in my RV shower? January 21, 2024 at 2:50 pm #39602 Tory JonKeymaster Joined: Nov 2019 Posts: 279 Likes: 273LikeUp0::Is it just the shower that has low-pressure issues? Are you using city water or your onboard water supply? Is it both hot and cold water?A little more info will help us pinpoint the issue.