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Which Waterless Toilet is for me?

We know that the waterless toilet products that we sell are unfamiliar to most people and can be confusing. So in this post we outline typical scenarios and match these up with waterless toilet solutions. If...

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Should Urine be Separated?

It can be confusing distinguishing between a composting toilet (E.G. Sun Mar) and a urine diverting compost toilet (E.G. Separett). Both types are self vented and odourless. Here I try to explain the differences and pros...

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Composting Explained

How does a horrible material turn into nice safe compost? It seems the transformation occurs by magic. Why do we want composting to happen in the toilet? There are two reasons; firstly to heat...

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Science of Foul Smells?

Composting can take place in the presence of air (aerobic) or without air (anaerobic). In composting toilets we prefer aerobic composting because this gives faster breakdown,  faster metabolic rates and higher temperatures (to kill pathogens)...

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We love our new toilet! It was simple to install and works perfectly on our Care Farm which is completely off grid. It smells 100% better than horrible portaloos too. Actually, it just doesn't smell at all!

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Even the emptying job is not as bad as you would assume due mainly to the fact that most waste has been reduced to almost nothing. I continue to be a compost toilet convert!

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Because of the (permanently on) fan installed on the collecting chamber, there are absolutely no smells coming from underneath. In fact I would say it means there are far less smells than a conventional toilet!

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The Sun Mar Excel electric has been in operation for two years. It has been completely odour-free. Most users have praised it

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Welcome to Toilet Revolution

Thank you for visiting Toilet Revolution. Choosing a waterless toilet can seem complicated with many options available. Toilet Revolution can help. We have researched every manufacturer of waterless toilets in the world and we can say that the dry, incinerating and composting toilets we supply are the best available. We supply to the UK, Ireland, Netherlands, Belgium, Denmark, Germany, France, Spain, Italy, Portugal and other EU countries. We have all the various solutions, so we can provide you with honest advice on each type. We give you the PRO’s and CON’s of each type of toilet and you make your choice on what suits your lifestyle. Our waterless toilets provide you with the freedom to live where you want without harming the environment. Free delivery on all toilets to mainland locations in the UK, Ireland. Contact us for prices for delivered prices to EU countries and Islands.

If the unit you need is going to be placed outdoors without electricity, the ideal unit is in the outdoor section. Similarly if the unit is going to be placed on a yacht or motor boat then the options are on the marine toilet page. Many customers are confused about the difference between a composting toilet and a urine diverting toilet. This post explains the main differences but in a nutshell the composting toilet does not separate solids from liquids and the composting happens in the unit. Whereas the urine diverting toilet does separate the solids and liquids. The solids are collected in the unit for subsequent composting outside the unit. Check out the news section of the site to get a rounded view of the topic or see what customers have said in testimonials.

Below we want to compare the various types of domestic units with one another so that you will be able to see which waterless toilet suits your lifestyle in general. The choice is a balance between purchase price, ongoing costs, ease of use and how much follow up care is required to dispose of the output.

Composting Toilets Review

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Sun Mar composting toilets have the NSF standard 41 certification for composting toilets which is required by many regulatory bodies. They are cheaper to buy than incinerating toilets but are more expensive to than the urine diverting compost toilets or deep freeze dry toilets. Ongoing costs are electricity (on electric units) and composting additives. On electric composting toilets the power is used to run a fan to expel odours and to power a heating element to evaporate excess liquids. This means that there can be no liquid outlet from the electric Sun Mar composting toilets. The electricity usage of the electric composting toilet is higher than the urine diverting toilet but lower than the electric incinerating toilets. There are non electric versions of every Sun Mar composting toilet model available. There is a liquid overflow on the non electric (NE) composting toilets. After each bowel movement a scoop of compost sure (mulch/composting additive) must be added to the unit. How much of this is used depends on how often you use the composting toilet. Sun Mar microbe mix, which is a culture of aerobic bacteria, can also be added once a month to boost the composting activity. If the unit is in constant use compost needs to be removed from the toilet once every 3-6 months. In weekend or holiday home applications this may be as little as once per year. This compares favourably to the urine diverting toilet which needs to be emptied every 2-4 weeks, incinerating toilet 1 week; all based on constant use. The material that is removed from the Sun Mar composting toilet is finished compost which the NSF have certified as safe. The compost, like the ash from the incinerating toilet, can be used in the flower garden and needs no further follow up, unlike the deep freeze or the urine diverting toilet where the waste needs to be contained for 12-18 months (best practice) to break down. In terms of ‘eco credentials’ the Sun Mar composting toilet may be the best as there is no liquid outlet on electric models. The patented bio drum technology means that microbes break the waste down in the presence of air and moisture just like they would do in nature.

Urine Diverting Compost Toilet Review

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The Separett urine diverting toilets have the lowest initial purchase price in the range. The only ongoing costs are the compostable bin liners and the electricity required to run the fan, which are both minimal. Unlike a composting toilet they do not require bulking agents (mulch). In terms of electricity usage the Separett urine diverting toilets are most economical (electric) units on the site. Unlike the Sun Mar composting toilet the Separett urine diverting compost toilets do not compost the waste in the unit itself. The urine is diverted outside to a soakaway so that the volume of waste collected is minimised. The solid waste is collected in the unit. The full bags are removed and must be placed in a composting bin for further 12-18 months (best practice) before it can be buried in the ground in the compostable bag. This is similar to the deep freeze dry toilet. In contrast, the once the material comes out of the Sun Mar composting toilet or Separett incinerating toilet, it is safe to be placed in the flower garden or under the bushes. In terms of “eco credentials” the urine diverting toilet is very good. It uses very little power and no additives are required. It must be noted however that the ease of disposal is the neither as pleasant as the composting toilet, where finished compost is removed, or the incinerating toilet, where sterile ash is removed. The urine diverting toilet will need to be emptied every 2-4 weeks which is less often that the incinerating toilet (1 week) or deep freeze toilet (2-3 days) and more frequently than the composting toilet ( 3-6 months) Also it must be noted that using this technology, urine is discharged into the ground outside the building so the unit does need a liquid outlet unlike the Sun Mar electric, Privetti deep freeze and incinerating toilet which do not have a liquid outlet.

Incinerating Toilets Review

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The Separett incinerating toilets have the highest purchase price in the range of self contained units. Ongoing costs are electricity and bowl liners. The bowl liners must be used at every visit, and they are low cost. There are no additives required. Once a week the ash tray needs to be emptied, based on continuous use by 5 people. This is more frequent than the composting toilet (3-6 months) and urine diverting toilet (2-3 weeks). The finality of the incineration process and the ease of the ash disposal make the incinerating option the most like the old flush toilet from the user point of view. There is no ongoing biological process at work and after each cycle the unit does not contain any waste from the previous user. The ash can be placed in the bin or in the flower garden and needs no further follow up. There is no liquid outlet from the unit, like the Sun Mar electric composting and deep freeze toilets. There is an air outlet vent required like all of the types except the deep freeze toilet. Unisex waterless urinals are often used in conjunction with the incinerating toilet to save energy.

Deep Freeze Back-Up Toilets Review

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The deep freeze toilet addresses the occasional need for an emergency toilet. It is more expensive than a urine diverting toilet but cheaper than the composting toilet or incinerating toilet. Since there is no air or liquid outlet there is no installation required. This unit is ready to go in 30 mins and therefore can be used in situations when normal toilet fails occasionally. There is no composting happening in the unit and there is a 6 month composting follow up like the urine diverting toilet except that here you also have frozen urine to deal with. The unit is easy to use but the follow up is arguably the most hassle in the range as there is liquid and solid to deal with. The power usage is low and there are no additives required but it is not intended as a long term solution. There is no liquid or air vent outlet required.