The Twentysixth Street environmental watering site is located at the end of Twentysixth Street, not far from the Nelwart Street site, which is coloured orange on the map. In 2016, the site was dominated by black box trees, lignum, nitre bush, and samphire. The first watering occurred in 2017.
By 2020, the retention of water at the Twentysixth Street site over successive watering years encouraged a pair of swans to nest. There was also a notable increase in native duck species and other birdlife – 13 waterbird species and 18 bushland bird species have been seen at the site. During frog call surveys, six frog species have been recorded.