polaromonas aquatica polaromonas aquatica polaromonas aquatica is a gram-negative, oxidase- and catalase-positive, rod-shaped, non-spore-forming bacterium from the genus polaromonas, which was isolated from tap water. polaromonas aquatica scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: comamonadaceae genus: polaromonas species: p. aquatica binomial name polaromonas aquaticakämpfer et al. 2006 type strain ccug 39402, cip 108776, emgs hb1-2, r-5535, vandamme r-5535