Using IBC Totes for Rainwater Harvesting

Why Use IBCs for Rainwater?

IBC totes are ideal for rainwater harvesting due to their large capacity, durability, stackability, and cost-effectiveness compared to purpose-built tanks.

Selecting the Right IBC

• Food-grade recommended: Even for non-potable use
• Previous contents matter: Never use IBCs that held toxic chemicals
• Grade B or C acceptable: Cosmetic wear doesn't affect function
• Opaque or covered: Prevents algae growth

Basic System Components

1. Collection surface: Roof with gutters
2. First flush diverter: Removes initial dirty water
3. Filter/screen: Removes debris
4. IBC storage tank: Main water storage
5. Overflow system: Directs excess water safely
6. Distribution valve: For accessing water

Installation Tips

• Elevate tank for gravity-fed distribution
• Ensure level, stable foundation
• Use food-safe fittings and connections
• Install mosquito-proof screens on vents
• Paint or cover to prevent UV degradation and algae

Legal Considerations

Washington State allows rainwater harvesting, but check local regulations. Some areas have restrictions on collection amounts or require permits.

Maintenance Requirements

• Inspect gutters and filters regularly
• Clean screens monthly during rainy season
• Periodically drain and clean tank
• Check for algae growth

Water Usage

Harvested rainwater is excellent for irrigation, car washing, toilet flushing, and other non-potable uses. Additional treatment required if considering potable use.