How Much Water Can a Greywater System Really Save?
Mason LogueTL;DR
Greywater systems can cut household water use by up to 30%, saving tens of thousands of gallons each year. Aqua2use models like the GWDD and Pro make it easy to divert laundry, shower, and sink water to your garden or landscape. Here’s how much you could save.
Average Household Water Use in the U.S.
According to the EPA, the average American family uses more than 300 gallons of water per day (EPA.gov). Of that:
- 70% is used indoors, and
- Nearly 50% of indoor use goes to showers, faucets, and laundry – all greywater sources.
That means roughly 100–150 gallons per day could be reused outdoors instead of being sent down the drain.
How Much Can Aqua2use Systems Save?
Aqua2use GWDD (Grey Water Diversion Device)
Ideal for small to mid-sized homes.
Diverts water from laundry, showers, and bathroom sinks.
Filters through a 4-stage system for subsurface irrigation.
Estimated savings:
For a household of 2–4 people, this system can reuse 20,000–40,000 gallons per year, reducing your water bill by approximately 30–40%, depending on local rates.
Aqua2use Pro
Built for large homes, schools, and small commercial sites.
Handles higher flow rates (up to 25 gallons per minute).
Includes a larger 50-gallon tank and stronger pump.
Estimated savings:
Large households or commercial buildings can divert 50,000+ gallons annually, preserving potable water for essential indoor uses.
Real Customer Savings Stories
Dave in Baja, Desert Region
“We live in the desert, and water is scarce… It’s been great to have all this additional water available for the garden.”
Dave set up separate sewer lines for greywater and black water, using buried irrigation lines to keep his garden thriving despite minimal rainfall.
Mike Ellsworth, Tiny House Owner
“While planning our tiny house, this system seamlessly integrated into our wastewater plan. The county had no inquiries. We’re extremely satisfied.”
Even with minimal plumbing space, Mike’s Aqua2use system ensures every drop counts.
Richard Ashley, Arizona
“The unit is attached to our laundry discharge and sends water out through hoses to surface water the yard with great results.”
His GWDD helps maintain a healthy yard while avoiding increased municipal water bills.
Calculate Your Personal Water Savings
Switching to a greywater system can reduce reliance on municipal water, lower your bills, and keep landscapes healthy – even in drought-prone areas. To calculate potential savings:
- List all greywater sources (showers, baths, laundry, sinks)
- Estimate gallons used per day for each
- Multiply by 365 to see annual reuse potential
Example:
- One 10-minute shower: ~25 gallons
- One laundry load: ~30 gallons
- Daily total: 55 gallons
- Annual total: ~20,000 gallons saved
Final Thoughts
Greywater systems like Aqua2use GWDD and Aqua2use Pro are proven tools to cut water use and support sustainable living. Whether managing a tiny home in the woods or a large commercial site, the right system pays for itself through reduced water bills and healthier landscapes.
