Tahunanui Beach has been given the all-clear and the public can swim there again.
The area was declared off-limits on February 1 when a storm surge and king tide in the north of the South Island caused a failure at a sewage pump.
On Tuesday, Nelson City Council said Tahunanui main beach, back beach and the Rocks Rd had received good water testing results and were fine for people to swim at.
However, the water contact ban is still in place towards Akersten St (around the marina) as the council waits for one further clear result.
Shellfish should not be taken from the enclosed waters of the Waimea Inlet and the Nelson Haven until further notice.