Menus Subscribe Search

Follow us


Greywater Dominoes

• October 13, 2009 • 4:45 PM

As Californians start looking seriously at using greywater for home irrigation, all roads — or pipes — lead to Art Ludwig.

In the mountains above Santa Barbara, Calif., streams run nearly dry for much of the year. The one running through an area known as the San Marcos Trout Club, however, is a bit different. Even in the dry heat of summer, deep pools of cool water swirl in their sandstone basins as it wends through the little nook on its way to the ocean.

For Art Ludwig, founder of Oasis Design — a family-run ecological design company covering everything from water delivery and disposal to permaculture — the spot is more than just a peaceful getaway and outdoor office near his home; it provides inspiration when he is cooking up ecological solutions and designing small-scale water systems. “Most of what I’ve learned has been synthesized in the wilderness,” he said. “The most ecological solution is the most economical.”

Finding enough fresh water has always been a challenge for lawmakers and engineers alike in the arid American West. With an ever-increasing population and dwindling mountain snowpack — the spring melts of which supply the lion’s share of water to Western rivers — water resources have become stretched thin.

According to the National Drought Mitigation Center’s Drought Monitor, most Western states are currently experiencing drought conditions of varying severity, and have been for most of the past decade. While in the past those who guide policy have relied upon creative outsourcing by water officials, overtaxed reservoirs and river systems have caused them to look more toward conservation as a way to ensure that their constituents continue to receive clean, reliable water at their taps.

Although nothing new, diverting greywater — water from washing machines, showers and sinks containing far less bacteria than the funky brew toilets and kitchen sinks emit — for irrigation has become one of the primary tools in a growing arsenal of conservation methods being examined. Although concern has been raised about the health effects of using greywater to water plants, the California Department of Public Health does not have any cases of greywater-related contamination on record.

“The most dangerous thing you can do with greywater is stir a bunch of feces into it and overload a septic or sewer system,” said Ludwig, adding that sewage treatment systems operating over capacity often dump untreated effluent into waterways.

Already in place in Arizona, New Mexico, Texas, Montana, Nevada and other Western states, standards spelling out how best to use water were also passed by the California Building Standards Commission on Aug. 4. Although California state Sen. Alan Lowenthal had already developed a set of greywater standards, a fourth year of statewide drought prompted the California Department of Housing and Community Development to push for emergency greywater standards at the Building Standards Commission.

“The reason we did the emergency standards is because in February, [Gov. Arnold Schwarzenegger] declared a drought situation and directed departments to do whatever they could to enable water conservation,” said Doug Hensel, deputy director of Housing and Community Development. The result was an intense series of meetings with stakeholder groups that helped shape the standards that were finally adopted in August. “The average person wouldn’t know that much about [installing greywater systems], so we made [the standard] kind of like a recipe to follow.”

By all accounts a vast improvement over the limited standards California had before this year, Ludwig nonetheless looked to Arizona’s laissez-faire greywater rules — in place since 2001 — calling it the model to emulate. The desert state’s user-friendly two-page brochure makes it easy for homeowners to figure out how to use greywater safely, without impinging upon how they go about designing their systems.

Ludwig also advised New Mexico officials when they adopted standards similar to Arizona’s in 2003.

“Every site is different, and so are people’s [water usage] habits,” said Daniel Wilson, a Santa Barbara-based landscape designer who has begun installing greywater diversion systems in conjunction with fruit tree planting. Despite California’s relatively late entry into simplified greywater regulation, some 1.7 million greywater systems are already installed in homes across the state —there are nearly 8 million nationwide — and until recently, only 200 of them were legally permitted.

“It [was] an abstinence-only greywater system. It pushed people to do it illegally,” said Ludwig, who stressed that while permitting is unnecessary for simple diversion systems, standards are important to ensure proper use and installation.

His Web site notes the difficulty of challenging the status quo and remaining street legal — on one page he writes: “The more ecologically you live, the more illegal it is.” And for that reason he provides both code-friendly information for prospective practitioners and a series of ideas for making end-runs around recalcitrant bureaucrats.

“State guidelines were very complicated and turned a lot of people off. People found that the standards were too difficult to deal with,” said Laura Allen, a member of Oakland-based Greywater Action, a group heavily involved in the stakeholder process that got California’s revised standards off the ground.

Now, as in many other Western states, California homeowners with greywater systems diverting washing machine effluent to irrigate onsite trees do not require a permit. This is where Ludwig and others experienced in building greywater systems come in, providing vast informational resources for existing and would-be greywater users. Not as simple as collecting laundry water in a bucket to pour on a garden, only certain types of plants — mostly fruit trees and flowers, but not vegetables such as carrots and lettuce — can benefit from greywater irrigation.

It also requires that homeowners, if they weren’t already doing so, use biodegradable laundry soap, as traditional soaps would harm the plants. “As long as you’re using the right products, [greywater irrigation] makes a lot of sense,” said Allen, who has been using greywater on her kiwi and apricot trees and berry bushes for a decade.

On the whole, greywater use seems to have attracted a passionate group of individuals, and a wealth of information is available for both do-it-yourselfers and those who are simply curious.

When it comes to greywater, all roads on the information highway lead to Ludwig, who has been researching and designing the uses and impacts of greywater for nearly 20 years.

“Greywater is part of a system that would allow us to exist on 90 percent less resources,” he said, explaining that his work reflects a belief that water use is connected to a number of other things, including energy use and ocean water quality. Transporting water over hundreds of miles and even pumping it over a mountain range, the State Water Project is California’s single most prolific user of energy, consuming about three percent of all the electricity used in the state, by EPA estimates. (The National Resources Defense Council puts that figure significantly higher, at 20 percent).

“This issue lies across the fault line of two world views. One is build it up to code and it’s ok, and the other is to look at water depletion and climate change as well — the big picture,” Ludwig said.

In a dilapidated trailer next to their house, Ludwig and his college-age daughter, Maya, usually aided by an intern or two, work tirelessly to compile videos, pictures, and new data for their seemingly endless Web site. From the mountainside vantage point of these cramped quarters — which are perennially cluttered with charts, official documents, and the odd bowl of fruit — the distant Pacific Ocean is visible through a couple of small windows, reminding them how connected everything really is.

Sign up for our free e-newsletter.

Are you on Facebook? Become our fan.

Follow us on Twitter.

Add our news to your site.

Ben Preston
Ben Preston is a 2011 graduate of the masters in journalism program at Columbia University. Before that, he was a staff reporter for the Santa Barbara, Calif.-based news website, Noozhawk.com, and has covered Western water and forest issues as well as local and state politics. In 2009, he traveled to Iraq to cover the U.S. Army 425th Civil Affairs Battalion, which was running reconstruction programs in Baghdad.

More From Ben Preston

A weekly roundup of the best of Pacific Standard and PSmag.com, delivered straight to your inbox.

Recent Posts

October 21 • 4:00 PM

Why the Number of Reported Sexual Offenses Is Skyrocketing at Occidental College

When you make it easier to report assault, people will come forward.


October 21 • 2:00 PM

Private Donors Are Supplying Spy Gear to Cops Across the Country Without Any Oversight

There’s little public scrutiny when private donors pay to give police controversial technology and weapons. Sometimes, companies are donors to the same foundations that purchase their products for police.


October 21 • 12:00 PM

How Clever Do You Think Your Dog Is?

Maybe as smart as a four-year-old child?


October 21 • 10:00 AM

Converting the Climate Change Non-Believers

When hard science isn’t enough, what can be done?



October 21 • 8:00 AM

Education Policy Is Stuck in the Manufacturing Age

Refining our policies and teaching social and emotional skills will help us to generate sustained prosperity.


October 21 • 7:13 AM

That Cigarette Would Make a Great Water Filter

Clean out the ashtray, add some aluminum oxide, and you’ve (almost) got yourself a low-cost way to remove arsenic from drinking water.


October 21 • 6:00 AM

Fruits and Vegetables Are About to Enter a Flavor Renaissance

Chefs are teaming up with plant breeders to revitalize bland produce with robust flavors and exotic beauty—qualities long neglected by industrial agriculture.


October 21 • 4:00 AM

She’s Cheating on Him, You Can Tell Just by Watching Them

New research suggests telltale signs of infidelity emerge even in a three- to five-minute video.


October 21 • 2:00 AM

Cheating Demographic Doom: Pittsburgh Exceptionalism and Japan’s Surprising Economic Resilience

Don’t judge a metro or a nation-state by its population numbers.


October 20 • 4:00 PM

The Bird Hat Craze That Sparked a Preservation Movement

How a fashion statement at the turn of the 19th century led to the creation of the first Audubon societies.


October 20 • 2:00 PM

The Risk of Getting Killed by the Police If You Are White, and If You Are Black

An analysis of killings by police shows outsize risk for young black males.


October 20 • 12:00 PM

Love and Hate in Israel and Palestine

Psychologists find that parties to a conflict think they’re motivated by love while their enemies are motivated by hate.


October 20 • 11:00 AM

My Dog Comes First: The Importance of Pets to Homeless Youth

Dogs and cats have both advantages and disadvantages for street-involved youth.


October 20 • 10:00 AM

Homophobia Is Not a Thing of the Past

Despite growing support for LGBT rights and recent decisions from the Supreme Court regarding the legality of same-sex marriage, the battle for acceptance has not yet been decided.


October 20 • 8:00 AM

Big Boobs Matter Most

Medical mnemonics are often scandalous and sexist, but they help the student to both remember important facts and cope with challenging new experiences.


October 20 • 6:00 AM

When Disease Becomes Political: The Likely Electoral Fallout From Ebola

Will voters blame President Obama—and punish Democrats in the upcoming mid-term elections—for a climate of fear?


October 20 • 4:00 AM

Coming Soon: The Anatomy of Ignorance


October 17 • 4:00 PM

What All Military Families Need to Know About High-Cost Lenders

Lessons from over a year on the beat.


October 17 • 2:00 PM

The Majority of Languages Do Not Have Gendered Pronouns

A world without “he.” Or “she.”


October 17 • 11:01 AM

How to Water a Farm in Sandy Ground

Physicists investigate how to grow food more efficiently in fine-grained soil.


October 17 • 10:00 AM

Can Science Fiction Spur Science Innovation?

Without proper funding, the answer might not even matter.


October 17 • 8:00 AM

Seattle, the Incredible Shrinking City

Seattle is leading the way in the micro-housing movement as an affordable alternative to high-cost city living.


October 17 • 6:00 AM

‘Voodoo Death’ and How the Mind Harms the Body

Can an intense belief that you’re about to die actually kill you? Researchers are learning more about “voodoo death” and how it isn’t limited to superstitious, foreign cultures.


October 17 • 4:00 AM

That Arts Degree Is Paying Off

A survey of people who have earned degrees in the arts find they are doing relatively well, although their education didn’t provide much guidance on managing a career.


Follow us


That Cigarette Would Make a Great Water Filter

Clean out the ashtray, add some aluminum oxide, and you've (almost) got yourself a low-cost way to remove arsenic from drinking water.

Love and Hate in Israel and Palestine

Psychologists find that parties to a conflict think they're motivated by love while their enemies are motivated by hate.

How to Water a Farm in Sandy Ground

Physicists investigate how to grow food more efficiently in fine-grained soil.

Unlocking Consciousness

A study of vegetative patients closes in on the nature of consciousness.

Advice for Emergency Alert Systems: Don’t Cry Wolf

A survey finds college students don't always take alerts seriously.

The Big One

One company, Amazon, controls 67 percent of the e-book market in the United States—down from 90 percent five years ago. September/October 2014 new-big-one-5

Copyright © 2014 by Pacific Standard and The Miller-McCune Center for Research, Media, and Public Policy. All Rights Reserved.