Happy Valley, South Australia
| Happy Valley Adelaide, South Australia | |||||||||||||||
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Western end of Windebanks Drive | |||||||||||||||
| Coordinates | 35°04′59″S 138°34′01″E / 35.083°S 138.567°E | ||||||||||||||
| Population | 11,420 (SAL 2021) | ||||||||||||||
| Postcode(s) | 5159 | ||||||||||||||
| Location | 20 km (12 mi) from Adelaide | ||||||||||||||
| LGA(s) | City of Onkaparinga | ||||||||||||||
| Region | Southern Adelaide | ||||||||||||||
| County | Adelaide | ||||||||||||||
| State electorate(s) | |||||||||||||||
| Federal division(s) | Kingston | ||||||||||||||
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Happy Valley is a metropolitan suburb of Adelaide, South Australia. It is located 20 km south of the Central Business District of Adelaide.
Within the suburb is the Happy Valley Reservoir accompanied by South Australia's largest water treatment plant, responsible for supplying water to much of the Adelaide metropolitan area.
Although it is now encompassed by suburbs, it still retains a relatively semi-rural character due to retention of native flora and vegetation surrounding the Happy Valley Reservoir, as well as parklands and golf courses along its border.