April 2025: 19 Net New Listings and Riverside County Nearly Done
In April 2025 we added 28 listings, deleted nine and reached almost the end of Riverside County, California. The Pool of the Month is a 50-meter pool in Matsuyama, Japan, with an unusually thorough website.
The review of Riverside County, California, was nearly complete at the end of April 2025, and this pool listings update also reports a net gain of 19 listings.
Site activity
New pools are getting harder to find. In April we added only 28 listings and deleted nine, for a net gain of 19. We are working through our California listings and have now covered almost all of Riverside County.
Pool of the Month
Our Pool of the Month for April 2025 takes us back to Japan. It is Aqua Palette Matsuyama in Matsuyama, Ehime Prefecture, which has a 50-meter pool and a remarkably well-done official website. Read why we chose it.
Featured pool
Aqua Palette Matsuyama | アクアパレットまつやま
Matsuyama, Japan
- Drop-in
- ¥300 per hour. [April, 2025]
- Pool
- 50m x 20.5m, 8 lanes, 1.35m - 1.4m depth, indoor

