Splash

Most behavior-change wins fade once the program ends. This one didn't.

When something is new in a school, students use it. New taps, new soap, new routines all get attention at first. The real test is whether the novelty becomes a habit.

In Kolkata schools, Project WISE raised handwashing with soap from 25% to over 90%. Then it held: 86% at 3 to 9 months, 93% at 9 to 18 months, and 90% more than 18 months on. Habits last when the systems behind them last.

Phase I proved that model in Kolkata and Addis Ababa. Phase II is now scaling it in Zambia, reaching 700,000 students across 400+ schools by 2030.

Read the longitudinal handwashing study → splash.org/impact

Some of the most crowded places on earth are city schools, and they keep getting more crowded.

Roughly 3 million people move into cities every week, and that growth lands hardest on shared infrastructure. In urban schools, classrooms fill faster than water and sanitation can keep up. More students, same taps, older pipes.

This World Population Day (July 11), we're focused on exactly that problem. Splash builds WASH systems for high-density urban schools, and Project WISE Phase II is now breaking ground in Zambia.

Learn more at Splash.org

Half the school drinking-water samples we tested carried E. coli. After Splash filtration, that number was zero.

Across 2,874 samples in Kolkata schools, E. coli presence fell from 54% to 0%. For students, that means water they can drink without a second thought — every day, not just the day it was installed. Splash filtration removes 99.9999% of bacterial pathogens to WHO standards.

Phase I in Kolkata and Addis Ababa proved the model works. Now Project WISE Phase II is breaking ground in Zambia, reaching 700,000 students across 400+ schools by 2030.

See the full research → splash.org/impact