Traditional Ruler (The Igwe)
Chief Iguegbe of Arochukwu who resided in Agbudu was in charge of the affairs of Amanasa settlement. Amanasa comprises of Agbudu, Enugu-Umuonyia and Umuomaku.
At that time, Chief Olendi was in charge of Umunambu village, while Chief Egbejimba was overseeing the affairs of Okpobe village and Chief Igbo was overseeing the affairs of Umuokpurukpu village.
These three chiefs in charge of Umunambu, Okpobe and Umuokpurukpu were all reporting to Chief Iguegbe at Agbudu. After the nation's independence in the year 1960, there was nothing again as the warrant chiefs in Umuomaku.
In 1977, Chief I.C Ibekwe (Onunekwuruoha I) was elected as the chief of Umuomaku. Following the death of Chief I.C Ibekwe and later Obi Ezeobioha I, Chief Gabriel Ezeobioha ascended the throne and held all the responsibilities until his death. After the passing on of Chief Gabriel (Ezeobioha II), the constitution of Umuomaku was changed to accommodate a rotational Igweship among the constituent villages, starting with the eldest village. This change led to the first election in 2017 that was contested by three prominent Umuomaku indigenes nominated from Umunambu village. The election later led to the present traditional institutional crisis in the town.
A new Igwe election was conducted on 24th September 2022 between Ifeanyi Peter Ogbugha (Nwawelugo) and Chief Livinus Ezenwa (Onwa). After the election Chief Livinus Ezenwa was elected the Igwe of Umuomaku.
Town unions are important administrative units in Igbo land. They are the elected government at the grassroots and are recognized by the state government as channel for rural governance, maintenance of peace and security and a vehicle to promote and engender developments in the communities, in collaboration with the traditional rulers (the Igwe).
Between the period 1950 and 1965, it was called Umuomaku Improvement Union (UIU) in early 1950s and later changed to Umuomaku Progressive Union (UPU) in 1953. This process in the name change was as a result of the disagreement from various village interest groups which was later resolved by Rev’d. Michael M. Maduakor in 1953 which led to the formation of the Umuomaku Progressive Union (UPU). The pioneer chairman of Umuomaku Improvement Union was Chief Herbert Ozoemena (Engr Ezeonwu, Boniface Nwa).
Between 1967 and 1970, Chief I.C Ibekwe was elected the President General (PG) in 1967. The administration of the Umuomaku Progressive Union was abruptly ended because of the Nigeria – Biafra civil war. The authority and power of the war council came from the Aguata divisional headquarter directly.
It is worthy of note that the position of the President General of UPU is rotational, from one village to another, then to the next.