Groves, two-time Olympian Thomas Fraser-Holmes and Rio Olympic open water swimmer Jarrod Poort missed three drug tests in a 12-month period, the Sunday Telegraph reported.
Swimming Australia said it was informed by the Australian Sport Anti-Doping Authority (ASADA) and the sport's world governing body FINA that some team members may have failed to update their whereabouts.
"ASADA and FINA are yet to finalise their processes and to confirm the final outcomes in relation to these matters," SA said in a statement.
Athletes are required to keep their whereabouts updated for the purpose of drug testing.
"It was disappointing that the information had been leaked before the relevant organisations had concluded the matters under a thorough and fair process for all involved," SA chief executive Mark Anderson added.
Anderson said Australian swimmers were reminded about anti-doping protocols as recently as last month's national championships in Brisbane.
"I have very clearly and very strongly reminded our team that you can never switch off from ensuring your whereabouts is accurate," he said.
Groves claimed the silver medal in the 200-metres butterfly at last year's Rio Olympics.
ASADA said at the point of each missed test, athletes have the opportunity to put forward an explanation before a missed-test declaration was made.
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