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【Example of Face Water Control Work】 Sagawa District Tunnel
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![[Example of Surface Water Works] Sado Circular Route, Taka Tunnel at Hage](https://image.www.ipros.com/public/product/image/25c/2001516382/IPROS12023327771857166432.jpg?w=280&h=280)
[Example of Surface Water Works] Sado Circular Route, Taka Tunnel at Hage
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![[Example of Face Water Control Work] Hisakurizaka Tunnel](https://image.www.ipros.com/public/product/image/22b/2001516380/IPROS11810534268222199985.jpg?w=280&h=280)
[Example of Face Water Control Work] Hisakurizaka Tunnel
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![[Example of Surface Water Management Work] Katano Tunnel](https://image.www.ipros.com/public/product/image/7a4/2001516376/IPROS7813603809375748728.jpg?w=280&h=280)
[Example of Surface Water Management Work] Katano Tunnel
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![[Example of Water Conduction Work] Minonotani Tunnel](https://image.www.ipros.com/public/product/image/7ca/2001516371/IPROS10038216101695337285.png?w=280&h=280)
[Example of Water Conduction Work] Minonotani Tunnel
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![[Example of Water Conduction Work] Shadow Path Tunnel](https://image.www.ipros.com/public/product/image/5b1/2001516357/IPROS11155140481822290728.png?w=280&h=280)
[Example of Water Conduction Work] Shadow Path Tunnel
news list
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2025 Good Design Award" winner! Mitsuba Drain has also been selected as "My Chosen Item.
The announcement of the 2025 Good Design Award (organized by the Japan Design Promotion Association) was made on October 15, 2025. This time, Nihon Doren Co., Ltd. received two Good Design Awards. Additionally, the focused drainage pipe "Mitsuba Doren" was selected for the special selection "My Chosen Item" by the Good Design Award judging committee. It has been highly evaluated as an excellent design that merges traditional wisdom with modern technology.
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Our new company building and factory have won the "2025 Good Design Award."
The announcement of the 2025 Good Design Award (organized by the Japan Design Promotion Association) was made on October 15, 2025. This time, Nihon Doren Co., Ltd. received two Good Design Awards. The new headquarters and factory, themed "Draped in Rain," realized a rainwater circulation system that integrates the company's products, architecture, and landscape. It serves as both a lab and showroom for rainwater circulation, while also creating a space that fosters connections with the community and interactions among employees.
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We have launched the Drainage Busters website!
The Drainage Busters are our proud team of drainage professionals. They visit facilities struggling with poor drainage to install underground drainage systems and educate about the little-known concept of "underground drainage." For any water-related issues, please consult the Drainage Busters.
Aboutニホン・ドレン
Fight against water.
Founded as a manufacturing company for drainage pipes and underground drainage systems, we at Nihon Doren believe it is our mission to address the diverse needs related to safety and security, such as the maintenance and preservation of structures and environmental measures, even as social environments change. We have set forth our purpose as "Eliminating water-related troubles from around the world through innovative manufacturing and heartfelt activities." With the mission of "Pursuing the best and solving problems at the fastest pace as professionals in drainage," each of our employees will continue to engage in creative thinking and challenges for the development of better products and new applications.