Millions of litres of sewage per second spilled into the Waitematā Harbour when the Ōrākei sewer collapsed six weeks ago.

But the contaminated water has not stopped some people heading to the beach. Tim Randall was among a dozen keen fishers casting out lines at Okahu Bay wharf this week.

"If you could see today the amount of people that are fishing, you would know that everybody's not worried, which is a bit stupid in some ways but I think people think they've got to eat."

He said it was a popular place to hook dinner.

"Snapper, gurnard, piper, yellow tail, kingfish sometimes."