Iguá Saneamento S.A. said that Canada Pension Plan Investment Board (CPPIB) has tabled an offer to acquire a stake in the Sao Paulo-based water and sewage utility, confirming earlier media talk on the investor interest. The terms of the proposal remained undisclosed. The offer is non-binding and it could not be certain whether any transaction would materialise, the target company noted in a statement, adding that it would update the market on the process in case of further development on the matter.