Board of Directors-Gusii Water and Sanitation Company

Mr. Justus Omari


Mr. Fredrick Nyamweya Nyagweso Joined the Board of the company on 5th September 2018 and was appointed the chairman Technical Board Committee and is currently the Chairman of the Board. He holds Kenya Certificate of Education (Division two) from St. Mary’s Ekerubo Secondary. He is a businessman and he established Efantos Auto Agencies Limited where he is a Managing Director.

Mr. Mongeri Mirieri

Board Member

Mr. Mongeri Mirieri joined the Board of directors of the company on 5th September 2018. He holds a Bachelor of Education (second class honors) from University of Nairobi. He is a prominent Businessman in Kisii County.

Mr. Joseph Onserio

Board Member

Mr Joseph Tirimba Onserio joined the board of the company on 5th February 2014. He holds diploma in administration and management from Co-operative College of Kenya. He has a wide experience in financial management in Government and Local Governments having worked in the Institute of Public and Private Partnerships, Washington USA.

Ms.Jackline Kerubo Mireri

Board Member

Ms Jackline Kerubo Mireri joined the Board of GWASCO on 5th September 2018 and she was appointed the Chairperson Audit Board Committee. She holds a Bachelor of Public Administration from Bugema University and Diploma in Public Relations from Kenya Institute of Management. She is currently working with the Standard group Limited as the Regional Business Manager (Nyanza)

Mr. Fredrick Nyangweso

Board Member

Mr. Justus Omari joined the Board of Gwasco on 5th September 2019 and was appointed the Chairman Finance, HR and Admin. Committee. He holds MSC Environmental Engineering and Management from JKUAT and BSC Agricultural Engineering from JKUAT, Diploma (Agricultural Engineering) from JKUAT, Certificate in Agricultural Engineering having worked with the Ministry of Agriculture as an Agricultural Engineer.

Mr. John billy Momanyi

Board Member

Mr John Billy Momanyi is the CEC for Lands, Housing, Physical Planning and Urban Development. He previously served as the CEC for Finance and Economic Planning. He is a career banker having worked at Kenya Commercial Bank (KCB) for over 30 years. Until his appointment, he served as Senior Manager in charge of KCB Kisii Branch. He also served as Senior Internal Auditor at KCB among other positions at the bank. He holds a Masters Degree in Strategic Management from Jomo Kenyatta University of Agriculture and Technology (JKUAT), a Bachelors Degree in Commerce (Finance) from JKUAT and a Diploma in Agriculture and Farm Management from Egerton College.

Mr. Barare

Board Member

Mr. Samwel Maiko

Board Member

Company Management Team - Gusii Water and Sanitation Company

Eng. Elvis Masiga

Ag. Managing Director

Mr. Shem Onchiri

Ag. Deputy Managing Director

Mr. Gerald Ogero

Technical Manager

Ms. Lucy Wachira

Commercial Manager

Mr. Thadeus Mogoi

Finance Manager(Acting)

Mr. Alex Nyakundi

Procurement Manager

Mr. Collins Ongera

ICT Manager


Mr. Robert Nyarangi

HR Manager

Partners and Supporters

The company is in collaboration with a number of organizations including: