Greywater Showcase: Reuse Water to Save Water

greywater mulch basin
Greywater from a laundry system is discharged into a mulch basin. Photo courtesy EcoAssistant.

Cool Davis partner Water Wise Davis, with support from the City of Davis, is hosting a Greywater Showcase in the Davis Senior Center Activity Room 646 A Street in Davis on Wednesday, July 12, from 5:30 to 7:30pm.

Come and win one of two raffle prizes: parts kit for a laundry greywater system! This is a $100 value! Reserve your spot today! Drop-ins will be accommodated as long as there is space. This event is FREE!

The Greywater Showcase will feature a short presentation about the two basic types of greywater systems,a Q&A with a panel of greywater system owners, demonstration systems, and time to chat with City of Davis building department and public works staff, system owners, Water Wise Davis members, and vendors.

What is greywater?

In California, greywater is defined as water collected from washing machines, sinks (excluding the kitchen sink), showers, and bathtubs that can be used for landscape irrigation. Using greywater to supplement or replace traditional irrigation systems will likely help you reduce your household water usage especially in summer by reducing your need to use potable water for outdoor irrigation.

laundry to landscape greywater system

Laundry to landscape greywater systems direct washer water to the landscape by way of a 3-way valve. Photo courtesy EcoAssistant.

Laundry to Landscape and Branched Drain systems

The easiest and permit free system is a “laundry to landscape” system that directs drainage water from your clothes washing machine to your landscape. The next level requires a bit more commitment of time and resources: a “branched drain” system directs drainage water from showers, bathroom sinks, and tubs to your landscape and requires a permit.

Greywater Showcase program

Hosted by Cool Davis working group Water Wise Davis with support from the City of Davis.

5:30pm Open tabling (see details below)

6:00pm MC: Paul Havemann, UCD Land Management and Garden Coordinator Cesar Chavez School

6:05pm Opening remarks: Brett Lee, City of Davis Council Member, Mayor Pro Tem

6:10pm Greywater Basics Presentation: Leslie Crenna, EcoAssistant and Water Wise Davis

6:30pm Panel of greywater system owners: introductions and brief statements, followed by a question and answer session. Panelists include Robyn Waxman of FARM Davis, Catherine Brinkley, Dept of Human Ecology at UCDavis, and others.

7:00pm Open Tabling

  • Owner’s Table: Greywater system owners available for deeper conversations
  • Code Questions with Greg Mahoney, Chief Building Officer, City of Davis
  • Water Conservation Resources with Dawn Calciano, Conservation Coordinator City of Davis
  • Water Wise Davis: Resources for design and parts, and demonstration systems
  • Vendors: Greywater providers, designers, and parts retailers

7:30pm Clean up

Reserve your spot today! Drop-ins will be accommodated as long as there is space.

Water Wise Davis supports wise water policy, and water conservation, reuse, and capture in the City of Davis and is a working group of Cool Davis.

greywater mulch basin

Greywater from a laundry system is discharged into a mulch basin. Photo courtesy EcoAssistant.

laundry to landscape greywater system

Laundry to landscape greywater systems direct drainage water to the landscape via flexible tubing similar to regular drip tubing. Photo courtesy EcoAssistant.

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Categories: City of Davis, Events, Partner, Water

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