Water play until evening in an indoor heated pool using waste heat from an incineration plant

About this spot

An indoor heated pool inside the Iriezaki Comprehensive Sludge Center in Kawasaki Ward, making use of waste heat from the incineration plant. In 2026 it is available year-round from April 1, with hours from 10:00 a.m. to 8:00 p.m. (from 9:00 a.m. in July and August). Being indoors, it is unaffected by the weather, so you can enjoy water play as planned even on rainy days, which is a great appeal. Because the water temperature is managed, it stays relatively comfortable even in chilly seasons. Enter at an easy pace in the afternoon and spend a relaxed time swimming and floating until evening.

Season & hours

Tips

It is reassuring to check fees, whether items are available to rent, and how busy it is on the official website in advance. Visitor numbers rise during the summer holidays, so entering early in the afternoon is recommended. A swim cap may be required, so bringing one is reassuring.

Best time to visit

Entering just after noon gives you plenty of afternoon time and lets you swim until evening

Access & map

Kawasaki-ku, Kawasaki-shi · inside the Iriezaki Comprehensive Sludge Center