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If you pre-plumbed for greywater reuse in anticipation of using a Nexus eWater system, or got stuck with a partial or even complete Nexus system, and still want to make your home green and sustainable, please contact ReWater for help or call us at (805) 716-0104.

ReWater® has been contacted by many people caught in your situation and we’re helping them convert to a tried- and-true ReWater irrigation system. We show you how to easily reconnect your toilets to city water, and how to safely and effectively irrigate with greywater.

Irrigation is the source of the majority of your water bill, so it holds the most potential for greywater reuse.

Every Nexus system owner or their contractor has told us the exact same thing – the Nexus system never worked, no matter what. It will never work for several reasons.

1) It has no method for removing the hair and lint from real greywater. The NSF 350 test their system passed was a total joke because it did not include hair and lint, the two main sources of debris in greywater, and Nexus eWater knew it was a total joke because their systems were already failing in the field by the time they got the worthless NSF 350 approval. In the real world, their systems clog up quickly and miserably.

2) Their choice of components is inadequate for the job of purifying real greywater over the long run. Even if you figured how to filter out the debris, the Nexus system can’t accomplish the on-going purification they promised without constantly replacing components.

3) Their design is fatally flawed. Even if you figured how to filter the debris, and then acquired better components, making these types of improvements is virtually impossible due to Nexus’ design.

4) Their workmanship is substandard. On top of all the above, the systems they shipped leak and otherwise make a mess. The Nexus system is not something you want near your home.

ReWater has led the legal gray water irrigation industry since 1990 with more systems sold than all other companies combined. We can help you achieve your goal to make your home green and sustainable.

Nexus e-Water

Have you been misled by the “down under” lies from
Nexus eWater of Australia? You’re not alone.

Despite NSF, NEXUS eWATER’s system fail

Here’s what’s wrong with Nexus eWater

San Francisco Chronicle March 23, 2016

WASHINGTON — Occupants of 11,000 new single-family houses under construction near Tracy will be able to recycle their shower, bath, laundry and sink water on site using a system designed by Australian water engineers. The company designed the system employed at River Islands, a master-planned development in the town of Lathrop (San Joaquin County), near Tracy.

FALSE!! Not a single system was employed at a single home there.

THE NEW YORK TIMES March 23, 2016

“The system, created by a company called Nexus eWater out of Australia and now headquartered in San Diego, will be deployed for the first time in a major home development in Lathrop, California.

FALSE!! Not a single system was employed at a single home there.


Nexus admits in their SEC filing that two very large new home developments failed to come to fruition and River Islands is one of those developments, yet they’re still telling the public that River Islands is a great success. Their continued deception is called fraud here in California and it’s a crime.

There are numerous news articles about this alleged “success story” that are still out there on the internet leading the public to the false conclusion that Nexus eWater is a huge success story, all of which are equally false, none of which Nexus has done a thing to retract, update, or otherwise correct.

In this particular news story, Nexus is claiming greatness because somebody in The Obama White House said so, so it must be true, right? Wrong!

Note that this article claims “The company designed the system employed at River Islands, a master-planned development in the town of Lathrop (San Joaquin County), near Tracy. Wrong again! Not one single home builder “employed” i.e. installed a single system!

While this article was written by somebody else, its writer got their information from Nexus eWater – maybe right from Nexus’ website – and that information was and still is patently false.

Nexus’ Achilles Heel

Learn why it fails

At 23 seconds into this video, Nexus points out the first ACHILLES HEEL in their system – their lousy hair “filter”.

It is actually a hair trap. And they call it a hair trap!

Human hairs are extremely thin but range from millimeters long to many feet long. Nexus doesn’t get to chose how long these hairs are in the real world, in which they never tested their systems before Nexus sold them to the public and discovered reality. Homes with teenage girls, women, some boys, and even men produce greywater with wads of these long hairs every day.

These hairs of whatever length enter the holes in the metal tube, but before passing all the way through, some bend over partway through the hole and become trapped, with part of the hair on the inside and part of the hair on the outside.

No amount of backwashing can remove them all. The more hairs that become trapped, the more they help entrap other hairs and lint and other debris in greywater. It takes a sharp knife to cut the trapped debris and then hands to remove the cut debris.

This “maintenance” might be required daily, or weekly, but it certainly can’t be postponed for 6 months as claimed by Nexus because no water could get through the trap by then. Claiming a six-month maintenance cycle is a patently false statement.

Nobody in their right mind wants that kind of “maintenance”. Any product which requires that much “maintenance” has a design defect.

By agreeing to maintain the system for the buyer for an extended period of time, Nexus went broke maintaining their own defective systems.

According to Nexus eWater’s SEC filings, they’ve only sold $165,000 worth of systems since they’ve been in business but spent over $6,900,000 doing it. That is not an investment grade business with a viable product by any standard.

If the Nexus eWater system actually worked, they would not have lost everything providing extensive, free maintenance to the few systems they did manage to sell and get installed and not ripped out by disgruntled builders. That kind of “technical support” is unsustainable at best, a Ponzi scheme at worst. If they had viable systems, they’d have plenty of income to keep their doors open. But their system doesn’t work in the real world of real greywater.

The Nexus eWater systems at KB Homes 52-home subdivision (shown on the right) failed so badly that KB Homes made them remove the systems and convert those $900,000 homes’ landscape to fresh water irrigation, costing the builder a fortune in lost good will with their customers and Nexus eWater hundreds of thousands of dollars in lost revenues, technical support, and trashed equipment.

If Nexus had a product that actually functioned nearly as well as they claim, a nationally recognized builder like KB Homes would have worked to keep their customers happy with KB Home’s decision to include those Nexus systems, but despite all efforts, the Nexus system does not work. There was nothing KB Homes could do but have Nexus yank the systems and get KB’s customer’s sprinklers hooked up to the city water supply.

Worse, here we are two years later reading Nexus eWater’s SEC filing for crowdfunding that they knew—before they installed the systems at KB Homes—that their system had bugs! Do you think they told KB Homes their systems had bugs? Of course they didn’t.

Do you think they told KB Homes their systems were a maintenance nightmare? Of course they didn’t.

Do you think they tell anyone any of this when they’re trying to sell systems? Of course not.

Even a drought couldn’t help Nexus eWater

Nexus eWater couldn’t even sell it’s systems in the worst drought in California’s history. All their bets were on Californian’s being desperate enough during the drought to buy into their “we’re from down under” cachet. Now they’re broke from running around all over the west trying to fix the few crappy systems they sold that can’t be fixed, hoping somehow their past won’t catch up with them. But it has.

Their History

Most companies do their research and development before going to market, but not Nexus eWater. They went straight from government subsidized concept to venture capital funded marketing (nearly $7,000,000 in investors’ money) and flew to San Diego where they could sell the unsuspecting public the wonderful, marvelous system they’d invented.

All Nexus’ corporate filings, financial documents, press releases, advertising, and in particular their recent SEC disclosures related to their desperate crowdfunding campaign (now defunct) indicates they skipped the vast majority of the expensive and time consuming R&D process and went straight to market.

Had they conducted due diligence, they’d have found that many previous inventors had come up with very similar systems and all of those systems failed for the same reasons. AGWA out of Burbank, GWRS from Los Angeles, BRAC out of Montreal, and many other companies all folded up after struggling for years because they didn’t understand what greywater really is.

Greywater is shower, tubs, bathroom sink, and laundry water. It contains all the minerals found in the fresh water supply, plus it has short and long hairs, cloth fibers of all dimensions, skin cells, scabs, boogers, solidified bar soaps, shampoos, conditioners, and other suspended debris from human bathing and laundry of all sizes and consistencies.

Almost all of that debris has to be removed, and all the bacteria, virus, and/or coliphage must be killed before that water can be reused for any purpose other than underground irrigation. That is not a cheap endeavor, but under the law in the US, that process is required in order to accomplish “treatment”.

Nexus eWater had NSF 350 approval, but no longer has NSF 350 approval. The approval they got did not include the ability to filter out hair or lint, the two most common sources of debris.

Just because a system passes some lab test to satisfy a standard for “treated” greywater doesn’t mean the system works. The system has to work in the real world, with real greywater, and for real people, before it’s worth anything to the public.

In California and most other western states, state law specifically allows untreated greywater to be used in underground drip irrigation. That filtration process doesn’t have to kill anything so it is relatively inexpensive.

Countless tinkerers, plumbers, water purification experts, and others have tried to create an inexpensive treatment system over the last 30 years or so. They all failed because greywater has to be highly filtered before it can be highly treated as required by law. Those two major processes make a very expensive system.

The blokes behind Nexus eWater aren’t the first to think they’re smarter than everyone else. They’re just the first to be slick enough to con investors out of nearly $7,000,000 to market their failure. Now that those investors realize what people in the greywater irrigation industry already knew decades ago, they stopped funding Nexus eWater, so it is now out of business.

The Solution

In California and most other western states, state law specifically allows “untreated” greywater to be used in underground drip irrigation. For untreated greywater, the filtration process only needs to remove suspended solids sufficient to not allow clogging downstream in the irrigation means. The system doesn’t have to kill anything so the system is relatively inexpensive.

The ReWater® System made, sold, and supported in California has proven itself since 1990 in landscapes as sophisticated as those seen in Los Angeles, Santa Monica, and Santa Barbara, as rugged as seen in the deserts of 29 Palms, Phoenix, and eastern San Diego County, and everywhere in between.

If you pre-plumbed a building for a Nexus eWater system, or maybe even already installed their tanks, call ReWater Systems at (805) 716-0104 or send us a message to learn how we can help you turn your greywater pre-plumbing into a successful ReWater irrigation system.