What you need to know:

• Eighty-three new community cases of COVID-19 were reported on Sunday, bringing the outbreak total to 511
• Thirty-four people are in hospital, two of whom are in ICU in a stable condition
• Most of New Zealand will move to alert level 3 on Tuesday night, but Northland and Auckland will stay at level 4
• Nearly 33,000 individual contacts of COVID cases have been identified, the majority of which are close contacts
• The latest locations of interest can be found here and a map of them can be found here.

Live updates below:

8:30am - Associate Minister of Health Dr Ayesha Verrall says the Defence Force is "going through the normal process in conjunction with public health" after COVID-19 was detected in an Auckland facility's wastewater.

According to Stuff, the naval barracks in the North Shore suburb of Narrow Neck are in full lockdown after wastewater samples collected from the facility last week returned a positive result.

The barracks accommodate personnel who are stationed at managed isolation and quarantine facilities.

Speaking to RNZ, Verrall said wastewater samples can test positive for COVID-19 "from time to time" and it's not always due to an active case.

A second test on Thursday returned a negative result.

A spokesperson for the Defence Force confirmed to the New Zealand Herald that the facility entered lockdown as a precaution after the wastewater sample tested positive for COVID-19 on Wednesday.

The spokesperson said 54 personnel have returned negative results so far.

"The navy has called in personnel who were on reserve standby to replace personnel who were rostered to start a MIQF duty," the spokesperson told the Herald.

8:20am - An immigration lawyer is urging the Government to act swiftly as visa delays lead to the loss of urgently needed medical staff.

Kamil Lakshman is calling for a fast-tracked work-to-residence process for both doctors and nurses, noting that medics are the soldiers on the frontline against COVID-19.

Speaking to RNZ, Lakshman said there was a lack of urgency around immigration policy, especially given what was at stake.

"The way I look at it is this virus is like an enemy, an unseen enemy - and our doctors and our medical profession and our health care workers are the soldiers that are guarding us if it blew up," she said.

"So then surely we need to protect these people, surely we need to retain them. We need to look at it like an emergency and the narrative needs to change."

Expressions of interest (EOIs) in skilled migrant residence visas are still being accepted, but none have been selected for 18 months since they were suspended at the start of the pandemic.

More than 10,000 EOIs are waiting to be selected, including more than 900 nurses and 235 doctors.

Lakshman believes a fast-tracked work-to-residence visa without the usual minimum timeframes would solve the problem, as well as potentially attracting more medical staff to come from overseas.

Read more here.

8:10am - The Bank of New Zealand (BNZ) is encouraging Kiwis to get "scam savvy" as fraudulent schemes run rampant online amid the ongoing lockdown.

New research from BNZ has found nearly four out of five New Zealanders have been targeted by a scam, with nearly a quarter falling victim to one.

The research also revealed that one in five New Zealanders believe organisations aren't doing enough to keep their personal information safe. It comes as BNZ launches its annual 'Scam Savvy Week' during lockdown, running from Monday, August 30 to Friday, September 3.

BNZ Head of Financial Crime, Ashley Kai Fong, says: "With Aotearoa back into lockdown more people are online - shopping, communicating, and keeping busy. But that comes with an increased risk of falling victim to the rising tide of scams and we all need to remain vigilant and get clued up on how to recognise and avoid scams.

"The best defence against scams is you. Knowing what to look for and what to do if you fall victim to a scam is one of the best ways to keep these criminals at bay.

"Launching Scam Savvy Week during lockdown is a no brainer. New Zealanders are online and on their phones and we want them to have access to the tools and resources at www.getscamsavvy.co.nz that will help them stay safe."

Fong says lockdowns create "a unique opportunity" for scammers, who will frequently mimic missed deliveries or offer expedited tests and vaccinations for a fee. 

"These are a depraved and hideous scam that prey on people's uncertainty, worry, and heightened stress levels," Fong says. "Remember, there is no cost to get a jab or a test. They are free and always will be. If you receive an email like this, report it to CERT NZ and if you're unsure if it's legitimate or not, ring Healthline on 0800 358 5453." 

8am - Teachers are calling on New Zealanders to help fund the thousands of food parcels going out to families in hardship as "the hardest lockdown yet" nears its second week.

In a statement via KidsCan on Monday morning, teachers urged Kiwis to help provide "critical support" for struggling families who are in urgent need of food.  

"I was lying awake last night unable to sleep trying to come up with a plan to help our whānau as the lockdown extension means critical support is now needed. We have 25 families that require food support, and I am at a loss of how to help them," one early childhood teacher wrote to KidsCan. 

"We just can't afford to buy enough food, there are hardly any cheap things in the supermarket because they are all sold out, so we have to buy the expensive brands," one parent wrote to their kindergarten. 

"Our whānau are struggling with transport, money, being a solo parent, overcrowded houses, emergency houses and supermarkets closing in their area as they were on the list of locations of interest," another teacher wrote. 

In response, KidsCan aims to deliver 2500 food parcels to struggling families in communities in Auckland and Wellington affected by COVID-19. 

"The children in these families would have been fed breakfast, snacks and lunch at early childhood centres and school every day," KidsCan's CEO Julie Chapman says. "Now, suddenly, their parents are having to find extra money for food in budgets that most people would struggle to survive on. 

"We're urging Kiwis who are in a position to help to once again donate $19 to turn COVID-19 into something positive - please visit www.19for19.org.nz and be part of the KidsCan village."

The $200 food parcels, from Foodbox, will be delivered directly to families needing support. Each parcel contains around 40kg of food, including bread, cheese, milk, butter, 2kg of fresh fruit and more than 6kg of fresh vegetables, 1kg of mince, two chickens, sausages, a tray of eggs, and pantry staples like olive oil, flour, baked beans, tinned fruit and vegetables, rice, oats, pasta, and pasta sauce.

You can donate at www.19for19.org.nz.

7:50am - Naval barracks on Auckland's North Shore are now in lockdown after COVID-19 was detected in the facility's wastewater, according to Stuff.

The facility accommodates personnel who are stationed at the city's managed isolation facilities.

The barracks are located on Vauxhall Rd in Narrow Neck, a North Shore suburb neighbouring Devonport - where the first positive case emerged in the current outbreak.

Stuff understands about 60 officers and naval ratings are currently confined to their quarters at the barracks while they isolate and await test results.

It follows wastewater from the facility testing positive for COVID-19 on Wednesday after a sample was collected two days earlier.

7:40am - When asked about COVID-19 vaccinations, Dr Verrall said New Zealand has enough vaccines to vaccinate the population by the end of the year.

She noted there may be a temporary point where there may be limited supply and the rollout may have to be slowed down.

Dr Verrall said health authorities are in negotiations to potentially get more vaccines for New Zealand but wouldn't provide any details.

"Whenever you are in negotiations you can't give details away, it makes it very hard to be able to strike a deal. But nonetheless health officials have worked very hard in recent weeks over that and we hope to be able to report back on that soon.

She said they are trying to "maintain this very high rate of vaccination that we have got at the moment and that's what we are working on".

7:25am - Associate Minister of Health Dr Ayesha Verrall said she didn't have an update on COVID-19 numbers from overnight.

7:05am - Gorman said while lockdowns are an important part of our elimination strategy currently, they aren't the best long-term COVID-19 strategy for New Zealand.

"If we pursue an elimination strategy into 2022/ 2023, that comes with a hard border which is not compatible with the way our society works, and frequent lockdowns. But with frequent lockdowns you run out of money and you run out of goodwill very, very fast. Long-term elimination strategies based on lockdowns are simply untenable. I think we need lockdowns now while we are being vaccinated but long term elimination is not a sustainable strategy."

6:50am- Gorman assured it is very unlikely New Zealand will still be in lockdown by Christmas.

"The only reason for that would be if we had a New South Wales situation where people have said 'I'm not going to sit at home, I'm going to wander around the neighbourhood and breathe on everybody I can.'"

He told The AM Show the Government's move to increase the number of contact tracers "tells you how ill prepared they were".

"There's nothing new that we are seeing here. We've known about this strain for a long, long  time. Better late than never of course in terms of boosting our contact tracing capacity, but the truth is, our testing capacity and our contact tracing capacity were nowhere near good enough. They simply weren't prepared."

He said it emphasises the importance of the COVID-19 lockdown to stamp out the virus.

6:35am - Gorman said the fact New Zealand "was so poorly prepared" meant there was a lot of spread of COVID-19 within households.

"Because of the queues to get tested, people got tested late, it took a day or so for the results to come back and people have been left in their homes for another day or so before they have been shifted on to a quarantine facility. It's made sure if there is one person who is infected in a family of six, by the time this has all occurred all six of you are infected."

6:25am - University of Auckland medical professor Des Gorman said it looks like New Zealand's COVID-19 numbers are plateauing but it's too soon to read much into them.

"Our public health measures were overwhelmed in the first couple of days of this outbreak," he told The AM Show.

"We just weren't ready. People were late getting tested and the results were late coming back and people were left in their homes when they were infected so it infected the whole family. So if you look at the numbers, they are entirely consistent with the spread of households and pre-lockdown infection. I can't see any evidence there at all that there is something dire or very worrying going on. What I see is entirely predictable." 

6:10am - The AM Show is on this morning from 6am with the latest on the COVID-19 outbreak. University of Auckland medical professor Des Gorman is on at 6:15am to discuss the COVID-19 case numbers and New Zealand's elimination strategy. Then at 7:20am Associate Minister of Health Dr Ayesha Verrall will be asked to provide an update on the outbreak. At 8:50am Southern Cross Health Society chief medical officer Dr Stephen Child explains why you should go to the GP during lockdown.

Watch The AM Show on Three or online here.

5:45am - The trucking sector wants more details before checkpoints are established at Auckland's southern boundary.

Applications are open for border exemptions as New Zealand prepares to split into two different COVID-19 alert levels from Wednesday; Auckland and Northland level 4 and the rest of the country 3.

But Nick Leggett, from the Road Transport Forum, says it was a tedious experience during Auckland's last lockdown.

"If we don't have clarity and if there are hold ups at the road blocks, I think what we'll see is gridlock along those highways," he told Newshub. "We're going to see goods not delivered on time [and] people not being able to get tot essential work on time."

5:30am - On Sunday, Prime Minister Jacinda Ardern revealed four essential workplaces have had COVID-19 transmission among staff during the latest outbreak - and suggested tougher restrictions might be needed.

"If we need to tighten up our restrictions further, we will," she told reporters.