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Room · 4 decisions
How much water does your yard really use?
Outdoor water use is more than 30% of the average home's water and can reach 60% in arid regions, EPA says, and as much as half of it is lost to wind, evaporation and runoff.
Numbers checked 11 November 2026
Drip irrigation or sprinklers for your yard?Put beds, shrubs and trees on drip; keep lawn on sprinklers with pressure-regulating heads and fixed leaks.Drip beds5,100+ gal
Is a smart irrigation controller worth it?Swap a clock timer for a WaterSense labeled controller on an in-ground system; skip it if you water by hose.Upgrade15,000 gal
Is a rain barrel legal and worth it?Worth it for beds where your state allows it; check your state's limit first, and never drink it or plumb it in.Check rules620 gal
Should you send washer water to the yard?Worth it for watering trees and shrubs where your state allows a simple washer system; check the rule first.Check rules6,000 gal
EPA's Statistics and Facts page puts the national residential outdoor total near 8 billion gallons a day, mostly for landscape irrigation. Its Outdoors page says the average household uses more water outside than for showering and laundry combined. That makes the yard the biggest single place to save, but also the place where rules matter most: state law decides what you may collect or reuse.
Before any purchase, walk the system you have: in a single six-month season, EPA reckons, broken heads and leaky joints can throw away as much as 25,000 gallons.
Is a smart irrigation controller worth it?
On an in-ground system still run by a clock timer, yes: EPA credits a WaterSense labeled controller with savings of up to 15,000 gallons yearly in a typical home. Read smart irrigation controllers for weather and soil moisture types, rebates and which wiring needs an electrician.
Drip irrigation or sprinklers for your yard?
Drip for beds, shrubs and trees, which a UC extension page puts at more than 90% efficient against 50 to 70% for sprinklers. Lawns stay on spray or rotor heads, ideally pressure-regulating ones; see drip or sprinklers.
Is a rain barrel legal and worth it?
It depends on your state: Colorado allows two barrels and 110 gallons, Utah up to 2,500 gallons a parcel, and EPA says some states might prohibit collection. Where allowed, a barrel suits beds and pots, never drinking; see rain barrels.
Should you send washer water to the yard?
Where your state allows a simple washer system, a household's 4,200 to 6,000 gallons of laundry water a year can feed trees and shrubs under mulch. It must never touch the drinking-water pipes; see laundry to landscape for state limits.
| Decision | Typical gallons a year | Source |
|---|---|---|
| Fix leaks and broken heads | up to 25,000 a six-month season | EPA Sprinkler Spruce-Up |
| WaterSense controller instead of clock timer | up to 15,000 | EPA |
| Drip on 1,000 sq ft of beds instead of 70% spray | about 5,100 a dry 26-week season | our arithmetic, UC and TWDB |
| WaterSense spray sprinkler bodies, 60 psi or more | nearly 5,600 | EPA |
| Laundry to landscape | 4,200 to 6,000 sent to plants | our arithmetic, ENERGY STAR |
| Rain barrel | 620 gal per inch off 1,000 sq ft of roof, capped by barrel size | our arithmetic, TWDB |
Source under the table: US EPA WaterSense — WaterSense Labeled Controllers. Controller, spray-head and leak figures are EPA's; drip, barrel and washer figures are our arithmetic from the extension, TWDB and ENERGY STAR figures named on each page.
What rules apply in every state?
Rainwater and greywater are for plants, never for drinking and never connected to house plumbing. Greywater goes under mulch or soil, not through a sprinkler, and diaper or harsh-chemical loads go to the sewer. Hard-wired controllers, cuts into drain pipes and backflow assemblies are for licensed trades. Rebates that help pay are collected on water utility rebates.
How we reached this
The outdoor shares and savings come from EPA WaterSense pages updated between March and August 2026. Drip, rain barrel and greywater gallons are our arithmetic, and each decision page shows its assumptions. State rules are limited to the states we could confirm through extension or agency pages on 11 Nov 2026; for any other, check your state water agency.
Sources
- US EPA WaterSense — Statistics and Facts · outdoor share 30% to 60%; 50% lost · checked 11 Nov 2026
- US EPA WaterSense — Outdoors · 8 billion gallons a day; more than shower and laundry · checked 11 Nov 2026
- US EPA WaterSense — WaterSense Labeled Controllers · up to 15,000 gallons a year · checked 11 Nov 2026
- US EPA WaterSense — Sprinkler Spruce-Up · 25,000 gallons a season from leaks · checked 11 Nov 2026
- US EPA WaterSense — Spray Sprinkler Bodies · 5,600 gallons a year at 60 psi or more · checked 11 Nov 2026
- UC Master Gardeners of San Luis Obispo County — Drip Irrigation for Home Gardens · drip over 90% efficient · checked 11 Nov 2026
- Colorado State University Extension — Rainwater Collection in Colorado · two barrels, 110 gallons · checked 11 Nov 2026
- Utah State University Extension — Rain Barrels in Utah · 2,500 gallons a parcel · checked 11 Nov 2026