How to Store Grey Water for Later Use?

Choosing the Right Storage Container

For storing grey water, consider using a 55-gallon (208-liter) tank made of durable, food-grade materials like stainless steel or HDPE. A 12-inch (30 cm) wide opening and 36-inch (90 cm) tall height provide easy access and prevent accidental openings. When selecting the container, consider its UV resistance, airtight seal, and a built-in overflow valve to prevent spills.

Proper Grey Water Treatment Before Storage

Before storing grey water, it’s essential to treat it to remove contaminants and pathogens. This can be achieved by installing a grey water treatment system that uses a combination of physical, chemical, and biological processes to purify the water. A system with a 10-gallon (38-liter) sedimentation tank, a 2-stage filtration system, and a 30-minute (1.5-hour for heavily contaminated water) aeration period can effectively treat grey water for reuse.

Storage and Distribution Considerations

To safely store and distribute grey water for later use, ensure the storage tank is elevated at least 6 inches (15 cm) above the ground to prevent contamination and animal access. Use a submersible pump to transfer the treated water to a separate distribution tank, which should be protected from direct sunlight to prevent algae growth. Regularly inspect the storage tank and distribution system for signs of leakage or contamination to maintain a safe and healthy water supply.