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| Without chemical treatment or special
filtration, harvested rainwater typically d