From Ventura County Building & Safety
Plumbing Code for Graywater -2007 Adopted 16A Revised
Graywater Parts and Supply List (LGDS)
Guidelines for the Installation of Residential Laundry Graywater Disposal System (LGDS) (11″ x 17″) – GW-1
Guidelines for the Installation of Residential Laundry Graywater Disposal System (LGDS) (18″ x 24″) – GW-1
Non Potable Rainwater Catchment Systems
P14 – Non Potable Rainwater Catchment Systems 11″x17″
Greywater from washing machines directed into mulched basins does not require a permit in Ventura County, as long as the installer follows some standards developed by State of CA, and revised by the County of Ventura (see the GW-1 guidelines). Greywater from bathroom sinks, tubs and showers can be redirected into your landscape where is a permit is required, with design considerations recently developed by the County of Ventura (see GW-2 guidelines). Reuse of greywater from kitchen sinks is currently prohibited.
Our local contact is Jim MacDonald, director of Ventura County Building and Safety Division (654-2787 or Jim.MacDonald@Ventura.org). Jim wrote an article on greywater for the Ventura County Star that is a good overview of GW-1 standards (where no permit is required) and available here: http://www.vcstar.com/lifestyle/how-to-use-laundry-gray-water-for-landscaping
State of California graywater code, CPC Title 24, Part 5, Chapter 16A, http://www.hcd.ca.gov/codes/state-housing-law/2007cpc_graywater_complete_2-2-10.pdf
County of Ventura Building & Safety, Resources and Guidelines for GW-1
VISIONARIES /LEADERS of GREYWATER and RAINWATER HARVESTING
Laura Allen’s Website Greywater Action http://greywateraction.org
AND Book:The Water-Wise Home by Laura Allen Storey Publishing, 2015.
Site of Art Ludwig, who started greywater regulation revolution in Santa Barbara (1989) http://Oasisdesign.net AND Book: The New Create an Oasis with Greywater: Choosing Building and Using Greywater Systems. Art Ludwig, Oasis Design, 2006.
Brad Lancaster’s website www.harvestingrainwater.com AND Book: Rainwater Harvesting for Drylands and Beyond. Brad Lancaster, Rainsource Press, 2008.
San Francisco Graywater Design Manual for Outdoor Irrigation.
San Luis Obispo Guide to the use of Graywater
Online Parts Info
CLEAN WATER Components
City of Thousand Oaks Parts List
Ask This Old House episode on greywater: http://www.thisoldhouse.com/toh/video/0,,20803344,00.html
MOVIES TO LOOK FOR: Watershed Revolution, DAMNATION and WATERSHED: Exploring a New Water Ethic for a New West
Below is 3 way valve set up for a laundry to landscape greywater system, with fittings and flow direction from drain to sewer or landscape identified.