1898 onwards, now more than 100 years of growth. Wahroonga reservoirs have played a major role in the supply of water to the Northern Suburbs. Wahroonga Reservoir was listed on the New South Wales State Heritage Register on 18 November 1999 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. The reservoirs at Wahroonga demonstrate the growth in demand in the Northern Suburbs from 1898 onwards, now more than 100 years of growth. Wahroonga reservoirs have played a major role in the supply of water to the Northern Suburbs. The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales. The reservoirs at Wahroonga demonstrate the variety of reservoir construction techniques used by the MWS & DB, the engineering expertise available to the Board. They are a prominent landmark in the area. The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales. The design and construction of this reservoir are not repeated in the Sydney Water system. The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales. This reservoir is unique in the Sydney Water Supply Area, with its riveted cylindrical tank and riveted steel girder stand. See also List of reservoirs and dams in New South Wales Sydney Water References Bibliography Attribution New South Wales State Heritage Register Wahroonga, New South Wales Reservoirs in Sydney Dams in New South Wales Articles incorporating text from the New South Wales State Heritage Register 1915 establishments in Australia Infrastructure completed in 1915