Coronavirus levels in Adelaide wastewater returns to 'zero' as Anzac Day services 'restricted' ThuThursday 11 updated FriFriday 12 MarMarch 2021 at 1:35am A small crowd that was allowed to attend last year's dawn service at Adelaide's National War Memorial. ( Share Print text only Cancel South Australia's Premier says the state government will offer as much support as necessary to ensure Anzac Day dawn services can go ahead next month despite coronavirus restrictions. Key points: It now says the level has fallen to zero It could have been from an old case in an interstate visitor It comes after three of the largest services were set to be restricted to several hundred people instead of up to 17,000 as normal because of concerns about the cost to enforce contact-tracing and social distancing.