東京都水道局長沢浄水場

Completed in 1957, the Nagasawa Water Purification Plant stands as a testament to modern Japanese architecture. Designed by Mamoru Yamada, this facility, located in Kawasaki City but serving Tokyo, is more than just a waterworks. It’s a “water palace,” a nickname earned from its striking design. Imagine a massive, mushroom-shaped structure. This is the rapid filtration tower of the Nagasawa Water Purification Plant. Its unique form, known as “mushroom column,” evokes the image of gushing water, a metaphorical representation of the plant’s function. The main building’s facade and the interior colonnade of the control facility further emphasize this flowing motif with elegant curved lines. Yamada, formerly of the Japanese Secession Movement and the Ministry of Communications, sought to create a building where structure and function blend seamlessly. The Nagasawa Water Purification Plant serves a vital role, providing water for roughly 500,000 people in Tokyo’s Setagaya, Meguro, and Ota wards. The plant utilizes the Tama River water system and draws water from the Tamagawa Water Supply operated by Kawasaki City. This treated water then flows to homes and businesses throughout the designated areas. The Nagasawa Water Purification Plant has also become a popular location for filming, thanks to its unique architecture and proximity to major studios like Toei Studios and Toho Studios. Its distinct aesthetic has made it a backdrop for various productions, including fashion shoots and music videos. The Nagasawa Water Purification Plant isn’t just a functional necessity; it’s a work of art. The plant embodies a harmonious blend of form and function. It serves as a reminder of the power of thoughtful design. This is a testament to the creativity and vision of its architect. The plant’s design has earned it a spot on the DOCOMOMO JAPAN list, recognizing its significance in the modern movement of architecture. Even today, the Nagasawa Water Purification Plant stands as a captivating landmark. The plant continues to serve a vital function for the city of Tokyo.