Water.org uses several financing approaches to address the water and sanitation finance gaps faced by communities at the base of the pyramid. Their WaterCredit model partners with microfinance institutions to provide loans for water and sanitation, mobilizing over $1 billion in commercial capital. Their WaterEquity investment funds use blended finance with philanthropic and private capital to invest in water enterprises. Technical assistance helps attract private investment by mitigating risks. These approaches have enabled Water.org's partners to reach over 10 million people across 13 countries. Lessons learned indicate demand for financing, the need to align offerings with institutional needs, and addressing policy barriers to encourage investment.