Catherine Mutanu was born in Machakos in 1971 at Machakos Mjini. She went to the county council of Machakos nursery school and later Muslim Primary school and did CPE in 1983. She went to Mumbuni High school for 4 years and later to Makueni Girls for A levels.
Thereafter, she joined the university of Nairobi for a Bachelor of Education degree. Her first post was Kaluluni secondary and was transferred to Makutano secondary in Mwala.
In 2004, she trained with an NGO Community Based Development service and she started to train others as the curriculum had just been changed. In 2005, she resigned as a teacher to take the opportunity of a program manager at the NGO.
She was in charge of the Nairobi region then and also did campaigns on constitutional matters. In 2017, she became the National coordinator in charge of 4 regions; Nairobi, Western and Nyanza, Coast, and Upper Eastern.
Catherine interacted with donors and handled administrative, and advocacy matters. She returned to school in 2017 to do Masters in public policy and administration and graduated in 2019 December.
In 2021 she enrolled for Ph.D. in public policy and management from Kenyatta University.
On the water docket, she expressed interest to do a new master plan to see how the county can use new methods as the old are affected by climate change. Dams, weirs, and solar boreholes in areas where the dams cant do well. She suggested the distribution of tanks to maximize the harvesting of water
On climate change, Catherine promised to review Machakos climate change act of 2014 which has not been operationalized, and also secure donor funding for climate change. To qualify for donor funding she will have to constitute the county climate change board. With the board, the county treasury has to allocate 2 percent of the budget to climate change.
On the problem of Water pollution in Athiriver, Catherine vowed to work with other departments in the county and the national Government to end pollution.