He said the committee worked well, involving iwi in the early stages of consent applications. In the past, iwi were an "interested bystander" until proposals were made public.
"Iwi now has a table right at the start."
Committee operating procedures had high thresholds compared with other councils' Maori committees. Quorum was 75 per cent of members and a vote required 80 per cent, "but we are aiming for consensus".
The council could not overturn a committee decision but could send the matter back for further consideration before it went out for public consultation.
The committee currently had a streamlining effect on decisions, rather than adding an extra layer to the process, he said.
"It is our answer to the water boards of the Waikato.
"There are seven catchment areas in Hawke's Bay and it seemed incredibly cumbersome to have a water board for each one, considering the number of people involved."
Ngati Kahungunu Iwi Incorporated chief executive Dr Adele Whyte said she was pleased iwi influence was guaranteed.
"It is something our treaty claimant groups have negotiated, so we support them," she said.
Hastings mayor and president of Local Government New Zealand Lawrence Yule said the bill explicitly future-proofed the committee should council amalgamation take effect in Hawke's Bay.
The Maori Party said it was pleased to see iwi in Hawke's Bay would have greater input.