In a quest to liberate as many women as possible from the gruelling task of trekking long distances to fetch water, Margaret Mwangola co-founded the Kenya Water for Health Organisation (KWAHO), bringing clean drinking water closer to homes. She knew that providing clean water would reduce waterborne diseases, and give women more
time to concentrate on small-scale businesses, which are a source of livelihood for their families.

Mwangola was instrumental in bringing piped water projects to Voi and to Western Kenya while serving as executive director of KWAHO. During her career she served as a trustee of the National Fund for the Disabled of Kenya
(NFDK). She was founder and chairperson of Management of Arid Zones and Development Options (MAZIDO) International — an NGO established to harness community responses towards poverty eradication and environmental conservation. She was active in various boards of schools and non-governmental institutions, including The Network for Water Sanitation, the Africa Centre of Technology and the Industrial Commercial
Development Corporation Investment Company. She received various awards including the Head of State Commendation, Moran of the Burning Spear (MBS) and the National Council for International Health (now the Global Health Council) Award for service in international Health.

Mwangola passed away on 26 October, 2016. She left behind a legacy of environmental consciousness that will no doubt have an impact on future generations.