During disasters, the "72 hours of water" is said to determine life or death, making drinking, cooking, and hygiene urgent challenges.
At the same time, Japan imports vast amounts of "virtual water" through food and products, relying heavily on water environments even in normal times. At Mamomizu, we advance water environment improvements in disasters and solutions to water issues in ordinary times through the two pillars of "proposals" and "action," aiming for an environment where everyone can use water safely.
Project Overview
Project Leader
Junnosuke Kubo
Start Date
September 2025
Members
9 Members
Our Mission
Through workshops like "What if the water stops?" and the "Youth Water Proposal 2025," high school students convey messages to society while spreading practical actions such as checking stockpiles, water conservation, and social media outreach at home and school.
Activities & Initiatives
While incorporating mechanisms to realize the weight of water resources, our activities are divided into two phases: "Disaster Times" and "Ordinary Times."
Improving Water Environments in Disasters
Conducting hands-on events assuming water outages. In addition, as an evolution of the Mamoneru project, we develop activities related to T (Toilet) and K (Kitchen) sanitation.
Tackling Water Issues in Ordinary Times
Promoting awareness and inquiry projects on virtual water while studying recycled water and circular utilization systems, exploring implementation in daily life and local communities.
Realizing the "Weight of Water" in Numbers
72Hours
The "72 hours of water" crucial for survival in disasters
~20,000L
Amount of virtual water required to produce 1kg of beef
12L
Amount of water used in a 1-minute shower
Phase 1 | Key Actions for T & K Sanitation
As an evolution of the Mamoneru project, we develop activities related to T (Toilet) and K (Kitchen) sanitation.
T (Toilet) Sanitation Activities
Flush toilets cannot be used in evacuation centers during disasters, and deteriorating hygiene leads to secondary disasters. Therefore, we undertake the following actions:
Promoting Portable Toilet Stockpiling
Collaborating with municipalities and schools to host exhibitions and workshops using cardboard and coagulant toilets. Calculating required amounts based on "5 uses per person/day for 3 days" to create stockpile plans.
Hygiene Management Awareness
Creating "Toilet Hygiene Checklists" and verifying disinfection/handwashing routines. Disseminating proper disposal methods via posters and social media to prevent infectious disease spread.
Policy-Linked Proposals
Considering policy proposals such as "Mandatory numerical targets for toilet stockpiling."
K (Kitchen) Sanitation Activities
Cooking becomes difficult during power/water outages, raising nutritional deficits and hygiene risks. We tackle this under the theme of "Securing Food in Disasters."
Emergency Food Cooking Events
Hosting "warm meal experience" workshops using plastic bag cooking and portable stoves beyond alpha rice and hardtack. Conducting cooking workshops under the condition of "What if there is no power or water for 3 days?"
Promoting Rolling Stock
Creating "Food Stockpile Checklists" for homes and schools. Youth propose nutritionally balanced rolling stock menus and share them on social media.
Policy-Linked Proposals
Formulating policy proposals such as "Transforming school cafeterias into disaster bases" and "Introducing shared kitchens in evacuation centers."
Upcoming Schedule
COMING SOON...