Nyandarua County Assembly
All matters relating to water and sanitation services, refuse removal, refuse dumps and solid waste disposal, forestry, control of air pollution, noise pollution, other public nuisances, including implementation of specific national government policies on natural resources and environmental conservation including soil and water conservation and forestry.
Current Members:
| S/No | Name | Designition | Ward |
| 1. | Hon. Wainaina Samuel Mathu | Chairperson | Mirangine |
| 2. | Hon. Wagura Justus Gaita | Vice- Chairperson | Kiriita |
| 3. | Hon. Njatha Samuel Kinyanjui | Member | Engineer |
| 4. | Hon. Kassana Hussein Ndungu | Member | Mangumu |
| 5. | Hon. Methu Wangari Lucy | Member | Kipipiri:Nominated |
| 6. | Hon. Maitai David Mwangi | Member | Cental |
| 7. | Hon. Karanja Reuben Gitau | Member | Shamata |
| 8. | Hon. Mahianyu Kenneth Mukira | Member | Karau |
| 9. | Hon. Wambui John Kieru | Member | Gatimu |
| 10. | Hon. Georgina Wanjiru Chira | Member | Kanjuiri Ridge :Nominated |
