This report was publicly released today. It was commissioned from Fieldforce4 by the Wellington City Council into Wellington Water, although the other local councils weren't directly involved. The report's been kept in secret for a month, but is being released after Local Government Minister Simeon Brown requested it.
It's important to note that its findings are disputed by Wellington Water which claims it's riddled with errors.
There's also some media commentary out from RNZ and from The Post (possibly paywalled for some).
It's been a while since I've seen TNG and maybe my memory's bad, but the first one that came to mind, Data's Day, seems to be one that nobody's yet listed.