The Northern Territory Government has put the water quality testing of Darwin Harbour and beaches out to tender.
An Environment Department spokeswoman says the tenders will form part of an integrated monitoring program.
Charles Darwin University is the only organisation that has already put in a submission to perform the tests. Recent Darwin City Council tests have found high levels of dangerous bacteria at the popular swimming spots of East Point beach and the nearby Lake Alexander. Both have been closed to bathers since February.
Meanwhile, Territory health authorities resumed testing Darwin beaches for dangerous bacteria today. The Health Department stopped testing city beaches in December because of marine stingers.