Tank Costs
Supply and installation:
- 2,000L slimline: $1,000-2,000
- 5,000L round: $1,500-3,000
- 10,000L round: $2,500-5,000
- Underground: $3,000-10,000
What's Included
- Tank supply
- Base preparation
- First flush diverter
- Connection to downpipes
- Overflow connection
- Basic tap
Additional Costs
- Pump: $300-800
- Connection to house: $500-2,000
- Filtration for drinking: $200-500
- Tank switching valve: $300-600
Sizing
Based on roof area and rainfall:
- Garden only: 2,000-5,000L
- Toilets and laundry: 5,000-10,000L
- Whole house: 10,000L+
Rebates
Some councils and states offer rebates for rainwater tanks. Check local programs.