Central Hawke's Bay District Council is seeking advice over claims councillors face a conflict of interest if they vote to invest ratepayer money in the Ruataniwha water storage scheme.
The claims were made during hearings on the council's proposal to invest $5 million in the Hawke's Bay Regional Council-backed Ruataniwha dam and irrigation project planned for Central Hawke's Bay.
Submitter Paula Fern singled out CHB Mayor Peter Butler and his sister, councillor Sally Butler, who are both owners of property within the planned irrigation area.
They stood to benefit from potential capital gains on their properties if the dam went ahead and were conflicted under the Local Authorities (Members'Interests) Act, Mrs Fern said.
"Those councillors should not be involved in this process at all, let alone be voting on committing ratepayer funds to a scheme that they may financially benefit from," she said.