The document discusses sustainable water practices like greywater reuse and composting toilets. It provides information on California's greywater regulations, types of greywater systems, and estimated water and cost savings from greywater reuse. It also lists additional resources for learning about greywater systems and composting toilets.

1. Greywater, green jobs, and ecological landscaping Laura Allen Greywater Action

2. How many gallons of water per day does the World Health Organization recommend each person have to meet their basic health and sanitation needs? 13 gallons

3. How many gallons does the "average" American use in one shower? 10 minutes x 2.5 gallon/min= 25 gallons

4. How many people worldwide do not have any water within a 15-minute walk of their homes? One billion

5. Who said, "Whiskey is for drinking; water is for fighting over"? Mark Twain

6. How many billions of gallons of raw or partially treated sewage flows into our waterways each year? 850 billion gallons

7. % of Total Energy used in CA related to WATER (pumping, heating, cleaning)‏ 19% of all electricity 32% of all natural gas

8. Per capita daily water consumption (gallons per day)‏

9. Where does our water come from?

12. Where does it go?

13. Sustainable water use practices Harvesting rainwater Reusing greywater Waterless (composting toilets)‏

15. from Rainwater Harvesting for Drylands

19. Millions of gallons per day of savings for So. Cal (MGD)‏ Washers Showers and washers Showers, washers, sinks 100% 10% 1% 383 672 964 38 67 96 4 7 10 From UCLA's report: Graywater- A Potential Source of Water Offsets need for desal plant

20. Greywater is a resource Saves water Saves energy Saves money/energy/chemicals at the treatment plant Encourages healthy product use Connect people to their backyards Facilitates local food production Protects rivers Redefines our relationship to water Creates green jobs

21. Greywater regulations Greywater is sewage Greywater is a resource 1992- CA writes 1 st greywater code, but treated it as a waste product/sewage (disposal code)‏ 1992-2009 Almost zero compliance rate- code out of line with intent (irrigation source) and practical nature of greywater 2009 DHCD (department of Housing and Community Development) writes new code. Greywater is starting to be viewed as a resource.

22. New Code Highlights No permit required for washing machine system (that don't alter household plumbing and following guidelines)‏ Discharge depth raised to 2 inches Mulch basins allowed for distribution Edibles okay- no touching edible portion of crop Two tiers of systems "simple" (under 250 gpd) and "complex" (over 250 gpd)‏

23. Greywater- From sinks, showers, washing machines (not from toilets or diaper washing)‏ 1. Outdoor use- Landscape direct (low tech) ‏ No pumps when possible, no filters, not connected to domestic water supply 2. Outdoor use- For drip irrigation (high tech)‏ Needs pumps, filters, connected to domestic water supply, automatically operated 3. Indoor use Needs filtering and disinfectant, needs a pump, automatically operated

24. Greywater Basics Don’t store it more than 24 hours Minimize contact with it Infiltrate into mulch- no pooling/ponding Best for trees (fruit), shrubs,- can be used for other plants as well Use only ecological products (no salt, or boron)‏ Know what you put down the drain! Don't use if your near a creek

25. Mulch basin Image from "Create an Oasis with Greywater" by Art Ludwig

27. Laundry to landscape- permit exempt ( $100-200 materials only, $700-2,000 complete installation)‏

28. 3-way diverter valve "auto" vent (prevents a siphon from draining machine as it tries to fill)‏ 1" pipe Sewer connection Greywater goes to landscape Diverter valve Anti-siphon

29. Bury and stake tubing Discharge under 2" into mulch ½ inch lines irrigate off main 1" line

30. Code compliant- GW discharged under mulch shield Not code compliant

32. System details: Materials- $150 Machine- 15 gallons/load, 3 loads a week. to 6 locations Each tree gets 9 gallons a week Labeled 3-way valve Mulch basins around trees, GW discharged under 2", onto mulch. Laundry irrigates 6 fruit trees around yard. City water irrigates vegi beds .

33. Requirements for permit exempt system from Ch. 16A Do Have 3-way valve Label system Discharge under 2" mulch/rock/cover Direct water to irrigation or disposal field Minimize contact Have a maintenance manual Don't Have ponding or runoff Discharge into neighbor's yard (1.5 ft. setback)‏ Connect to potable water supply Include a pump Violate other codes/laws Damage building Use diaper wash water or hazardous chemicals (oily rags, etc.) *EDUCATION

34. Image from "Create an Oasis with Greywater" by Art Ludwig Shower and Sink Systems

35. Installing a 3-way valve (requires a permit)‏ Sewer Greywater 1. 2. 3. Greywater enters

36. Branched Drain System- $150-300 materials only, $1,000-3,000 complete installation Flows by gravity No moving parts No external filters Flow is divided using flow splitters ¼ flow ¼ flow ¼ flow ½ flow ½ flow ½ flow 1/8 flow Final outlets receive a few gallons each use- system is sized to match plant needs.

37. Future tree Greywater in Flow splitter divides flow in half

38. Flow splitter divides flow in half Branched drain system from a high use sink: divided to 4 outlets

39. Greywater outlet, irrigates drip line of tree. Mulch basin will be filled to top when complete. Image from Create an Oasis with Greywater

40. Sand filter to drip irrigation High-tech/high-end systems $8,000-10,000 I mage from Watersprout.org

41. High tech- drip irrigation RP Backflow preventer Rewater system

43. Composting Toilets

44. Earthen Closet

46. Urine reuse in Sweden Image: Sustainable Sanitation

47. Sewerless public bathroom Clivus Multrum composting toilets Foam flush toilets inside Subsurface greywater irrigation

48. More resources [email_address] Web info greywateraction.org greywater.net greywateralliance.org Books Create an Oasis with Greywater by Art Ludwig Training Greywater Action- greywateraction.org Green Gardener Program (Ecology Action) ecoact.org Installers Greywateraction.org/installers

49. Laundry to landscape 4 Groups 1 st Match parts used with their name. Say what the part does in the system Take turns! 2 nd Create a mock-up of the inside 3-way valve connection (using the image provided)‏