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Last updated date：2024/10/2
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Water and Wastewater Treatment
Water Treatment
The City of Yokohama is making proactive efforts to conserve the total water environment from the headwaters to the sea. It serves to conserve headwaters and stably offer safe and high-quality tap water.
Relevant Information
Yokohama Water Business Association
Yokohama Water Co., Ltd.(external website)
Providing 24-hour Water Lifeline（PDF：1,730KB）
Growth of the City Depends on Water（PDF：1,460KB）
Wastewater Treatment (Sewerage System)
Under the advanced treatment systems, Environmental Planning Bereau promotes water recycling and reuse for sustainable environment, and defines the approaches toward flood prevention for safe and comfortable life.
Relevant Information
Yokohama Water Business Association
For the Future Environment of Yokohama
Preparing for heavy rains Use of the inland flood maps(external website)
Let’s learn about the sewerage system in Yokohama(external website)
Redevelopment of an aging sewerage infrastructure to support the city(external website)
YOKOHAMA SEWAGE WORKS（PDF：4,338KB）
The Wealth of Resources in Sewage Sludge - Sludge Treatment Center -（PDF：3,950KB）
Page ID：816-433-611