Labeled 3-way valveIt's easy to follow the guidelines required for a no-permit system from the new California plumbing code. The system needs to have a way to switch back to the sewer/septic, not have any pooling of greywater, be discharged under 2 inches of mulch, and a few more basic guidelines.
Greywater tomato harvest These tomatoes were grown using a laundry to landscape greywater system. After the first growing season with greywater irrigation the owner reported, "It seemed like the vegetables were on steroids!"
Greywatered yardThe water from a shower goes outside to two separate irrigation zones. An electronic switch controls the 3-way valve under the house. Greywater irrigates six young fruit trees in the front yard.
Year-round greywater reuse in cold climates can be a challenge. What to do with all that water when the garden's under snow? Will greywater freeze in the pipes? Many greywater users divert greywater to a sewer or septic system during the cold season, but it's possible to ecologically dispose of greywater even in the dead of winter.
This was built in 2 days from scrap material. Put your clothes and some soap (garden-friendly, like Oasis) in, fill it up with water, let it soak for half an hour, then agitate. It lives outside, so when you're through, the water drains out a hose in the bottom, ready for convenient watering.
Assembling a woodchip biofilter to trap grease and food particles.Greywater from the kitchen sink contains grease and food particles, which can cause clogging and slow infiltration into the soil. After years of sometimes foul-smelling experimentation, greywater pioneers have concluded that the best way to trap grease and food particles and create habitat for decomposers is with woodchips in a mulch basin, not in a woodchip biofilter.