Mkangi warns that the transfer of the functions should be cerebral, where devolution is optimally implemented the way Kenyans designed it.

The lobbyists expressed doubt on President Ruto's commitment to ensuring that devolution succeeds.

Waiguru added that the decision by WASREB infringes on Nairobi County's constitutional mandate to provide water and sanitation services.

Functions estimated at Sh275 billion said to belong to counties are still under the national government.