Frequently Asked Questions

How much water can harvesting save?

Indoor water use varies primarily as a function of the number of occupants in a household. Typical water use ranges from 55 to 75 gallons per person per day. For a family of 4, this works out to a range of approximately 200-300 gallons per day, or 1,400 to 2,000 gallons per week.

Outdoor water use varies widely, primarily based on usage type or irrigation watering patterns. See below for information on potential uses for collected rainwater.

The chart below provides examples of typical outdoor water use for irrigation watering for varying landscape areas.

Irrigated Area, Square Feet Recommended Weekly Water Usage
2,000 sq. ft. 1,200 gallons
4,000 sq. ft. 2,500 gallons
8,000 sq. ft. 5,000 gallons
12,000 sq. ft. 7,400 gallons
15,000 sq. ft. 9,300 gallons
Half-acre (21,780 sq. ft.) 13,500 gallons
8,000 sq. ft. Acre (43,560 sq. ft.) 27,000 gallons
Weekly usage as typically recommended by a municipality or landscaper. Equivalent to 1" of rainfall.

What can I use collected rainwater for?

Can I use collected water for drinking, cooking or other domestic needs?

How do I know what size system I might want?

Do I need to decommission the system in the winter?

What sort of maintenance is required for these systems?

Are building or other permits required for installation of a system?

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