The Ministry of Health has reported 113 new daily community COVID-19 infections on Sunday, a day after cases crossed the 200 mark for the first time.
Auckland reported 109 of the new cases, while Waikato recorded two and Northland one.
A Ministry of Health spokesman says 78 percent of eligible New Zealanders are now fully vaccinated against COVID-19, while 89 percent have had a first dose.
"There continues to be positive wastewater detections across Auckland, as expected given the spread of cases across the city," the ministry said in a statement on Sunday.
Those wastwater results included on Waiheke Island and Waiuku earlier this week, the ministry said.
Cases in New Zealand's Delta outbreak have now reached 4352. There are 74 people in hospital with COVID-19, five of whom are in intensive care.
Waikato
There were two cases reported in Waikato overnight - one in Hamilton and the other in Ōtorohanga. The ministry said one was a known contact of another infection and the other remains unlinked to the outbreak.
"Public Health will today investigate links for the second case.
"Today there are six pop-up and dedicated testing sites operating across Hamilton, Huntly, Ōtorohanga and Te Awamutu. We are encouraging anyone in these areas with COVID-19 symptoms to seek a test."
Auckland
Aucklanders from any suburb are being urged to get tested for COVID-19 if they have symptoms - even if they are mild.
"Even if people are fully vaccinated and have been isolating at home, please seek out a test if you feel the need," the ministry said. "We want to take the opportunity to again recognise the hard work put in on a daily basis by testing site staff."