The Adelaide region was subject to Level 3 Enhanced water restrictions throughout 2009–10. The history of water restrictions for the Adelaide region during 2009–10 is presented below.
| Water restriction level | Date implemented | Date altered | Hand-held hose watering and drippers 
 | Bucket/ watering cans | Reticulation sprinklers | Swimming pools | Car washing | Hard surfaces | 
|---|---|---|---|---|---|---|---|---|
| Level 3 enhanced (non-daylight saving) | 05 Apr 2009 | 04 Oct 2009 | 2 day/week with trigger nozzle 7–10 am or 4–7 pm | Any time | Prohibited | No filling without permit | Bucket or commercial car wash only | No washing hard surfaces 
 | 
| Watering hours changed (daylight saving) | 04 Oct 2009 | 17 Nov 2009 | 2 day/week with trigger nozzle 6–9 am or 6–9 pm | |||||
| Watering hours increased to 5 hours/week | 17 Nov 2009 | 04 Apr 2010 | Max 5 hrs/week any day 6–9 am or 6–9 pm | |||||
| Watering hours changed (non-daylight savings) | 04 Apr 2010 | 02 May 2010 | Max 5 hrs/week any day 7–10 am and 4–7 pm 
 
 
 
 
 
 
 
 
 
 | |||||
| Watering hours increased to 7 hours/week | 02 May 2010 | 01 Dec 2010 | Max 7 hrs/week any day 7–10 am and 4–7 pm | 5 pm–10 am (6 pm–10 am in daylight savings time) | No restrictions | Bucket, commercial car wash or hose with trigger nozzle only | ||
| 01 Dec 2010 | - | Any time | 
 | 
 | 
 | 
 | Hosing of external paved areas for health and safety reasons only | 
Source: SA Water website, 2010