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Friendly flushing: Water-efficient toilets help make sustainable homes
Northwestern.edu ^ | DEC 06, 2012 | MELODY CHANDLERAND, WILL GRUNEWALD

Posted on 12/06/2012 7:20:37 PM PST by ExxonPatrolUs

Commode, can, the Oval Office, and the Super Bowl. Throne, pot, loo, John. The royal flush.

The toilet, in its illustrious career, has earned a variety of affectionate nicknames. But variety extends well beyond just puns when talking about those porcelain perches: Eco- friendly options, from low-flow to entirely waterless toilets, are an important part of bringing water sustainability into homes. Toilet flushes account for about 30 percent of in-home water usage, according to the Environmental Protection Agency. Toilets consume more water in American homes than any other individual type of appliance, such as showers, dishwashers, and washing machines.

And with climate change, drought and demand straining fresh water resources, methods of decreasing water consumption are increasingly important to environmentalists and policy-makers. “It’s easy to think that we have this enormous indispensable water supply, that we do have about 20 percent of the world's supply of surface fresh water right here at the Great Lakes,” said Nancy Tuchman, an aquatic ecology researcher and director of the Institute of Urban Environmental Sustainability at Loyal University.

"We have the biggest supply on the continent, but it doesn’t mean that it’s going to be there forever – and especially with global climate change and all this evaporation and little precipitation that could build the water back up. So we need to conserve.” Studies show that Great Lakes water levels are dropping toward record lows.

Toilet Alternatives

One radical toilet-based solution takes water out of the equation altogether. A so-called “dry toilet” can begin as little more than a bucket filled with a layer of a carbon-rich material such as dry leaves, sawdust or newspaper. “For five bucks, or if I find a bucket and have some carbon material, I can actually build out a solution really fast,” said Nancy Klehm, who founded a Chicago-based eco-solutions company, Social Ecologies, in 2010. “It takes hardly any capital; it just takes some ingenuity and knowing what to do with it.”

After a visit to the dry toilet, users cover their wastes with a new layer of carbon- rich material. Once the bucket is full, the contents can be dumped out and composted.

Klehm organized a dry toilet trial-run for a group of 22 Chicagoans from 2008 to 2010, and she continues to work with dry toilets and composting today. For the aptly dubbed "Humble Pile" program, she collected waste from participants for a three- month period, and then composted it with more carbon-rich material for two years. “People were really surprised by how much they liked dry toilets,” she said. Participants in the aptly dubbed “Humble Pile” program liked the fact that the toilets were quiet and mobile, and that the toilets could be designed ergonomically. Most of all, they were pleasantly surprised that the toilets didn’t smell.

It's important that anyone considering a dry toilet understand how to handle the waste. "People can generally compost anywhere at anytime," Klehm said. "They just need to do it well so not to present a nuisance or attract animals."

When dealing with the dry toilet waste rather than food or landscape waste, it is important to kill pathogens from the human body by composting at high temperature created by heat-generating microbes. "Composting human waste should not be taken on unless someone is a very skilled composter," Klehm said. When done correctly, though, microbial digestion should naturally turn waste to soil and the process should be odor-free.

After the two year "Humble Pile" composting period that Klehm took on for the participants, she returned the compost to its original owners, which she said grew participant’s appreciation for dry toilets even more. “They were really excited that they were building soil," she said. “It’s a larger issue than just how much water we’re using,” explained sustainable water expert Wendy Pabich, who holds a Ph.D. in environmental engineering from Massachusetts Institute of Technology. “When you buy a dry compost toilet, that’s all about recycling the nutrients and carbon in our waste, rather than sending them to rivers where the organic and nutrient load drive putrefaction – algal groves, fish kills and ecosystem changes.”

Dry toilets probably aren’t for everybody. “The ‘yuk’ factor is definitely there,” but that reaction is largely a cultural bias, Pabich said. She added that commercially produced dry toilets have eliminated many of the un- pleasantries consumers might expect. But there are many other, more conventional toilet options for people looking to lessen their lavatory’s environmental impact.

If every American home were to swap out old toilets for new, water efficiency- certified toilets, the EPA estimates that it would collectively save 640 billion gallons of water every year – equivalent to two week’s flow over Niagara Falls.

Toilets from before 1980 can use up to 7 gallons of water per flush, but federal regulations require that new toilets use no more than 1.6 gallons per flush. Simply by replacing old toilets, people can dramatically reduce their water consumption. And new dual-flush toilets (with one setting for wet wastes and one for solids] or low-flow toilets), marked with an EPA WaterSense label, are certified to use at least 20 percent less water than that national baseline.

A water-efficient home

In her recent book, “Taking on Water,” Pabich shared her personal experience renovating her entire home to be more water-efficient. The process involved installing meters on every water-consuming element of the house, analyzing the results, and devising ways to minimize water consumption. She chose the low-flow toilets, for instance.

Improving water sustainability at home need not be so involved for everyone, though. “I don’t think people need to go through all the effort I went through, nor to the level of analysis and understanding,” Pabich said. Instead, they can focus on a few core changes that Pablich shared in the form of a “Water Cheat Sheet” when she spoke at Chicago Ideas Week in October.

Some changes are a matter of updating home hardware. Pabich switched out her hold toilets and self-installed low-flow alternatives. “It’s not very hard, and it’s not very expensive,” she said. Toilets, though, are only a piece of the puzzle. The cheat sheet prescribes other improvements such as water-efficient washing machines and dishwashers.

Other conservation measures

requires behavioral changes, though. From eating less meat (livestock consume an enormous amount of water) to turning off the shower while lathering, small adjustments in daily routines add up. Turn off the sink while you brush your teeth, and don’t run your dishwasher until it’s full. “One thing that’s become really clear to me is the impact of our aggregate decision- making,” Pabich said. If each one of us does something to reduce our direct water use or our larger water footprint, by eating less meat or replacing our toilets, the collective impact is significant.”

The big picture: water pricing

Though individual choices have major impacts on water conservation, achieving long-term sustainability will require top-down policy changes too.

“There are clearly some major structural problems,” Pabich said. “Water is entirely underpriced, and the second that price signal is corrected I think things will dramatically change.”

Bill Christiansen, program planner for the Chicago-based Alliance for Water Efficiency, agreed. “Here in Chicago, the water rates are very reasonable, so that’s probably not going to be a motivator for lots of people.”

The city of Chicago will charge $2.89 per 1,000 gallons of water beginning Jan. 1, 2013, up from $2.51 this year. The rate is scheduled to increase again for 2014 and 2015 in increments of 15 percent. Sewer rates will be at 92 percent of water bills for 2013, but will hit 100 percent in 2015. “I think the public will be most interested in water efficiency when the need is more urgent,” Christiansen said.

People such as Klehm and Pabich promote water-efficiency initiatives, but it will take a concerted effort of people to achieve all the necessary changes.

“It requires another level of involvement in your home,” Klehm said. “So your home is not just this passive space that you retreat into at the end of the night with your carryout Chinese food and pop in a Netflix movie.”

“You have to watch the flows of all the different things that are coming into and out of your house. And there aren’t a lot of people who want to have that level of engagement in their homes.”


TOPICS: Chit/Chat
KEYWORDS: toilet
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Comment #61 Removed by Moderator

To: llevrok

wait till that rubber bladder in that toilet pops and blows the lid of the thing.

It might take a while but you’ll get your “I told ya so!” moment.


62 posted on 12/06/2012 9:03:01 PM PST by cableguymn (The founding fathers would be shooting by now..)
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To: Chickensoup

Last time we where out there their only complaint is they have been moving that old s#$t house around so long they forgot what is virgin land and what is not.


63 posted on 12/06/2012 9:05:26 PM PST by cableguymn (The founding fathers would be shooting by now..)
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To: ExxonPatrolUs

I wonder if a civilian can get ahold of one of those industrial Walmart toilets, those things can suck the sh!t right out of you.


64 posted on 12/06/2012 9:08:09 PM PST by Husker24
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To: BuffaloJack

Anyone who is flushing more than once, needs a newer toilet, it took a while for the manufacturers to catch up with the laws.

You must be doing something to your 60 years old toilet to make it a 3 gallon flusher, because those used to be 5.5 to 7 gallon flushers.

The 3.5 toilets from the 1980s were pretty bad also.

Once the states started passing laws regulating toilets the manufacturers asked the feds to make national standards.

I don’t know when federal involvement started but in the sixties toilets had already gone to 5.5 gallons from 7 gallons and that was followed by 3.5 gallons in the 80s, then the 1.6 in 1994.


65 posted on 12/06/2012 9:08:29 PM PST by ansel12 (The only Senate seat GOP pick up was the Palin endorsed Deb Fischer's successful run in Nebraska)
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To: Chickensoup; cableguymn; SunkenCiv
A clean airy privy that is well limed and moved annually is a goood think. I think peple used to plant daylilies over the old privy site which gave them the vulgar name of Sh**house Roses in some parts of the country.

I read elsewhere that people would plant honeysuckle around a privy to make it smell nice, or hollyhocks to help hide it.

After the great Loma Prieta earthquake in 1989, the Cypress Structure of the Nimitz Freeway (I-80, East SF Bay, Oakland, CA) had to be demolished and rerouted. Along with the reconstruction plans there was an obligatory archaeological study of West Oakland and the houses that would be affected by the construction. This study included an in-depth look at material culture of California in the late 19th - early 20th century (Oakland was founded in 1852) and many, many artifacts were found where outhouses had been located, since they were used as trash heaps.

http://www.sonoma.edu/asc/cypress/finalreport/index.htm

66 posted on 12/06/2012 9:13:42 PM PST by thecodont
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To: ansel12

The repeated flushes might be more than just the toilet that is the cause. Old plumbing system (like the one in my house) are not designed to handle taking a trud from the toilet to the septic tank with just 1.6 gallons.

our old 1.6 flush toilet would normally block the pipe to the septic because the small amount of water would leave things behind.

With the new (old) 5 gallon toilet there is again enough water to carry it all down.


67 posted on 12/06/2012 9:15:46 PM PST by cableguymn (The founding fathers would be shooting by now..)
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To: ExxonPatrolUs
Due to the shallow grade of the main sewer pipe to the street connection and the low-flow toilet already required when the house was built in 1985 it takes 2-3 flushes to do the job.

Composting toilets are allowable here now (weren't in '85) but they can't be dry. They are required by law to use water. They also have to be certified to comply with "all laws, rules and regulations." I assume that means "all" county, state and feral "laws, rules and regulations."

You eco-nuts can't have big government and freedom of choice particularly low impact technologies. Suck it up, cupcakes, you wanted Big Brother so now you have to file a $100 Environmental Impact Statement every time you wipe your sorry tree hugging butts with your one square of government approved toilet paper.

68 posted on 12/06/2012 9:18:50 PM PST by TigersEye (Who is John Galt?)
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To: ClearCase_guy

> I don’t know why having a toilet that needs to be flushed 3 or 4 times helps the environment ... but if you say so ...

Exactly. It always takes 2 or more flushes to get the bowl “clean” again...lol. Used to only take one. I wonder if they have figured out that the old ones were more efficient yet? lol


69 posted on 12/06/2012 9:20:26 PM PST by jsanders2001
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To: ansel12

Sorry, the ‘60s-’80s toilets are 3.0 gal, not 3.5 (not sure if there are different regulations then for different places, but that is the parents’ volume). Thus is it less to flush once old than to flush 2x in the modern requirement.


70 posted on 12/06/2012 9:22:17 PM PST by the OlLine Rebel (Common sense is an uncommon virtue./Technological progress cannot be legislated.)
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To: cableguymn

It must be unique to your house, because when constructed properly, the plumbing is the same whether it goes to the city, or to the septic.

When I run into a toilet that is adjusted properly yet has a weak flush, then I just tell the people that it needs to be replaced with a better flushing model.

Forty years ago people would demineralize their toilets with acid, to help restore the original flush.


71 posted on 12/06/2012 9:23:30 PM PST by ansel12 (The only Senate seat GOP pick up was the Palin endorsed Deb Fischer's successful run in Nebraska)
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To: jsanders2001

It has only been a little over thirty years so ... no, they haven’t figured out the math yet.


72 posted on 12/06/2012 9:25:30 PM PST by TigersEye (Who is John Galt?)
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To: thecodont

I remember honeysuckle. I had an archeologist acquaintance who specialized in 17TH and 18th century and she spent most of her time in old privies. I found a certain satisfaction it that.


73 posted on 12/06/2012 9:27:13 PM PST by Chickensoup (Leftist Totalitarian Fascism coming to a country like yours.)
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To: cableguymn

Last time we where out there their only complaint is they have been moving that old s#$t house around so long they forgot what is virgin land and what is not.

_______________

I think that is why the oldtimes planted the daylilies to mark the old spots.


74 posted on 12/06/2012 9:29:05 PM PST by Chickensoup (Leftist Totalitarian Fascism coming to a country like yours.)
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To: KoRn

They’ll put sensors in the toilet to measure the size of the feces, and tax
us by the pound.


75 posted on 12/06/2012 9:31:59 PM PST by rfp1234 (Arguing with a liberal is like playing chess with a pigeon.)
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To: cableguymn

Reminds me of the time our CO on USS Nimitz screamed over the voicetube to the bridge to get the Chief Engineer to his cabin. Seems the pressure reducer failed and 150 psi firemain hit his john when he flushed. Broken porcelain and bits of brown trout everywhere.


76 posted on 12/06/2012 9:32:32 PM PST by GreyHoundSailor
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To: cableguymn

Reminds me of the time our CO on USS Nimitz screamed over the voicetube to the bridge to get the Chief Engineer to his cabin. Seems the pressure reducer failed and 150 psi firemain hit his john when he flushed. Broken porcelain and bits of brown trout everywhere.


77 posted on 12/06/2012 9:32:54 PM PST by GreyHoundSailor
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To: ansel12

My tank holds 4 gallons. It is a low-flow installed in ‘85. It has no mineral buildup after 27 years. It has fairly new guts that work perfectly. It takes at least 2 flushes to do the job and has since day one. The only design that would change the equation is one that used more water.


78 posted on 12/06/2012 9:33:09 PM PST by TigersEye (Who is John Galt?)
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To: rfp1234

They’ll put sensors in the toilet to measure the size of the feces, and tax us by the pound.
__________________________

For Pete’s sake, shush!

They dont need anymore ideas!


79 posted on 12/06/2012 9:33:29 PM PST by Chickensoup (Leftist Totalitarian Fascism coming to a country like yours.)
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To: Slump Tester

In the old designs it takes lots of water to get a lot of waste down.

The better new toilets can handle a lot of solid waste because of the bowl design and how the water enters the bowl. Toilets are rated as to how much solid waste they can handle and when I needed to change out my old 5 gallon toilet becaue the tank cracked, I researched the low flows and got one that flushes better than the old one using 1/3 the water.


80 posted on 12/06/2012 9:38:22 PM PST by Secret Agent Man (I can neither confirm or deny that; even if I could, I couldn't - it's classified.)
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