The Chair of Wellington Water says he's considering stepping down, after a scathing report uncovered more organisational failures.

It highlights a lack of oversight in contracting work, with pipe maintenance work paid at nearly three times the comparable council rate.

Nick Leggett says he'll step down if the region's mayors want him to but he has acted on the issues in question.

"What we've tried to do is lift the lid on that - be honest and upfront. There wasn't the right competitive tension to get the best value for ratepayers, the internal systems for the organisation, the financial checks - those kind of processes were appalling." 

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