Ms Taueki said she had also "regularly" informed Horowhenua District Council about the sites.
"They are just as guilty as the lake trustees in desecrating Muaupoko taonga and waahi tapu."
"All of those different sites, all of those different burials - as far as we're concerned they're all connected to the lake, that's why they're there."
Lake Horowhenua Trust chairman Matt Sword said the project needed everyone to embrace it as an opportunity.
He said from his understanding, there were not any sacred sites around the lake that the pathway would go through.
"The stage we're at is just to get the feasibility report so we can go and talk to the owners about the project. I'm sure we'd be able to talk about those things then."
He said Ms Taueki's view was not necessarily the view of "many hundreds" of other owners of the lake.
"There is desire by the five partners to invigorate their collective energy, pool efforts and help the walk and cycleway vision become reality," he said.
In a media release in late June, Mr Sword said the pathway provided an opportunity to tell stories about the lake in the way that only Muaupoko can tell them.
Despite the fact feasibility studies still had to be carried out, he said the Lake Horowhenua Trust hoped to officially open the walk and cycleway on August 4, 2018, exactly five years after the Lake Horowhenua Accord was signed.