Human error caused 110,000 liters of water containing Benchmark's much-touted new sea lice treatment, Ectosan Vet, to end up in the sea in Nordland, Norway, on June 1, according to the Norwegian Directorate of Fisheries.

Ectosan Vet is specifically designed to be used in conjunction with CleanTreat, a water purification system that removes medicines from treatment water before safely returning cleaned water to the sea.

Aquaculture genetics, health and nutrition firm Benchmark informed the Directorate of Fisheries of the spill in a letter seen by IntraFish.