Nicaraguan Team

Left: Marlon Castro, Sergio Romero, Marta Lorena Largaespada. Right: Sergio demonstrating the use of the chlorine test kit. Matagalpa, 2021

Project Coordinator, Nicaragua

Sergio Jesus Romero Alvarado

Sergio is a Professional Technician in Hygiene and Epidemiology working with the Ministry of Health for thirty years and has been the Coordinator of the Manual Chlorinator Project since its inception in 2000. The success of the project supplying clean water to 400,000 people is due to his leadership.

Head Chlorinator Technician, Nicaragua

Marlon Castro

Marlon was born and raised in Matagalpa and has been a chlorinator project head field technician since 2014 and has been involved in all chlorinator installations since then. He has a wealth of experience and knowledge in all issues dealing with contaminated water in rural drinking water systems. His currently is the only technician, works six days a week, and understands all the intricacies of dealing with rural communities and The Manual Chlorinator.

Left: Marlon demonstrating the chlorinator and chlorine test kit to a group of communities interested in installing a chlorinator. Matagalpa, 2021.

Marta is Sergio’s wife and is the accountant for the Manual Chlorinator project.


Marta Lorena Largaespada

Board of Directors

Board members Charlie Taflin (Left) Technical Advisor and Fred Jacob President (center) the co-inventors of The Manual Chlorinator, discussing a chlorinator installation with water technician Ramon Castillo (right) Matagalpa, Nicaragua. 2003.

The Board of Directors is a diverse group that shares a common interest in improving the welfare of the people of Latin America. The Board combines scientific and medical expertise, decades of experience in development work in Central America, and a deep understanding of Latin American culture.

The Board consists of: Board Chair and President Fred Jacob with over thirty years experience in Central America in Community Development; Dr. Narvaez Jacob a Nicaraguan native, and Family Practice Physician in Minnesota; Charles Taflin a water engineer with 40 years of experience in drinking water production and had been in charge of water treatment for the City of Minneapolis, Minnesota prior to his retirement; Sergio Romero Alvarado the Nicaraguan project director with thirty years of experience in Epidemiology. All serve without compensation.

Current Board Members

Fred Jacob, President

Dr. Corina Narváez Jacob, Vice President

Sergio Romero Alvarado, Project Advisor

Charles Taflin, Technical Advisor

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