Give Household Water a Second Job

Reuse Water, Not Rain

A shower can send usable water down the drain while garden beds need irrigation. A greywater system for garden use redirects selected household wastewater to soil, not drinking-water use.

What Greywater Systems Do

These systems collect wastewater from eligible household sources and route it to a garden rather than directly to sewer or septic. Some divert it simply; others add filtration or treatment.

Know Which Sources Qualify

Showers, baths, bathroom sinks, and laundry are common possible sources, subject to local rules and system design. Toilet water is blackwater, while kitchen wastewater may be excluded or treated differently.

Apply Water to Soil

Garden irrigation may be suitable when the source, system, application, and local requirements align. Keep greywater on soil, away from edible plant parts, foliage, paths, and places where people play.

Match the System to Home

A diversion system routes eligible water to a designated area; filtration or treatment adds components to manage water quality or debris. Plumbing, landscape, and local code determine what fits.

Avoid Unsafe Uses

Greywater is not sterile or drinkable. Do not spray or mist untreated water, allow runoff off the property, or direct toilet wastewater into the garden system; check guidance near wells and food crops.

Choose Products, Check Filters

Salts, sodium, boron, bleach, and other product ingredients can harm plants or soil with repeated exposure. Choose products thoughtfully and clean fitted screens or filters, which can clog with lint.

Decide If It Fits

A system may suit a home with eligible water, a garden that can accept it safely, and a practical installation route. Check local rules and permits; savings on water bills are not guaranteed.

Protect Soil Over Time

Repeated exposure to salts, sodium, boron, or other household-product ingredients can affect soil and plants. Review labels and local extension guidance when selecting products and irrigation areas.

Check the Route and Rules

A pump is not always needed: gravity can work when plumbing and elevation suit the layout, while other sites need a pump or different design. Confirm local requirements before installing or irrigating.

Keep reading

Read the full guide to greywater systems