An annual event to view the Tokyo metropolitan government’s sewage disposal system using biodegradation is planned at the Nakano Water Reclamation Center (中野水再生センター Nakano Mizu Saisei Center in Japanese) on Sunday, 27 October, 2019.

You may apply for the tour at the center from 10 a.m. to 3:30 p.m. Oct 27, 2019. Explanations will be given only in Japanese. The event is part of the local festival “Arai Matsuri.”

The center is located just north of the historic Nakano Prison Main Gate. For information about the Gate, view the Nakano Dark Tourism website! https://mewpro.cc/dark-tourism/ 

You may also visit the CAPIC prison product shop next to the center for souvenirs. Many items with Japanese taste, made by inmates, are sold.

An underground sewage disposal facility is beneath Heiwa no Mori Park (Peace Forest Park) that is being converted by the Nakano municipal government to a sports park ahead of the 2020 Tokyo Olympics and Paralympics despite strong objections from local residents.