Envirolet Composting Toilet World

Composting Toilet World Sponsor


Composting Toilet Certification Claims

We thought we would discuss briefly the topic of certifications and composting toilets in order to clarify a few things. We have received emails regarding some possibly confusing issues and hope to dispel any myths.

Questions about NSF® Standard-41
NSF® Standard-41 is a common standard looked for by many local and state authorities in the United States. This is a composting toilet system performance standard.

On the web, you may find that some composting toilet companies claim that only NSF® can test to an NSF® standard, such as NSF® Standard-41.

Is this true? Can only NSF® test to NSF® Standard-41?
No, this is not true. Although NSF® (National Sanitation Foundation) created Standard-41, other Nationally Recognized Testing Laboratories (NRTL) can test to the same standard. Among other reasons, this allows for fair competition by allowing companies to get local testing agencies to test their products.

Any company that tells you or advertises this is either incorrect and/or misleading you.

For example, Envirolet® Composting Toilet Systems were tested and are certified to meet NSF® Standard-41 and ANSI/NSF-41 1998 by CSA®, the Canadian Standards Association.

CSA® tests and certifies products to a wide range of regional, national and international standards, including standards written or administered by the American National Standards Institute (ANSI), Underwriters Laboratories (UL), Canadian Standards Association (CSA), National Sanitation Foundation (NSF), International Electrotechnical Commission (IEC), and others. [Via CSA®.]

If you have any concerns or questions about this, please contact CSA® on the web or by calling 1-866-797-4272.

What about claims of being the only certified or listed product?
A product certified to an NSF® standard by another agency (e.g., CSA®, UL®) will not appear on the NSF® web site. But, will appear on the actual testing agency web site and/or a copy of the certification will be available from them upon request.

What about claims of being the first certified or listed product?
Again, this may be true. But, in reality, this is irrelevant. The first microwave oven certified many many years ago to a standard is not necessarily better than one certified last week.

Composting Toilet Certifications

This page is and will always be a work-in-progress as composting toilet system certifications change constantly. We hope to keep this section as up-to-date as possible.

If you have any questions, or wish us to expand on this section, please drop us a message at info@compostingtoilet.org.

There is a lot to cover in relation to composting toilets and certifications. We hope to present all the info in a nicely organized format.



In this section we will explore the actual certifications or marks. This is probably what you came here for. You want to know what certification is required for where you live.

It is not an easy task trying to assemble a list of all the certifications worldwide. But, since we are Composting Toilet World I guess this task is up to us! We are going to assemble this information by country. This seems the most logical.

Just in case you did not think of this… please be sure to check with local authorities if you have any doubts about what you need in your area. The information presented here will hopefully be correct, but may not be.

If you do not find any information about your location regarding composting toilets this does not mean that composting toilets are not allowed where you are. In fact, it is either a case of:

a) We have not acquired any certification information for that area yet.
b) We have not added the info we have to this web site.
c) There are no certifications or regulations in your area — in other words, they are more laid back and don’t care what you use as a sanitiation solution (we suggest a composting toilet!).


This is not an easy quesiton to answer. Mainly, because of the shear number of countries and testing agencies. First, let’s consider a few other things.

Does a manufacturer have to get certified/tested by an agency in their own country?
Yes and no. While you do not have to get tested by an agency in your home country, most manufacturers seem to. This is due to many factors including costs, proximity to production facilites and testing laboratories.

Plus, it makes common sense to get certified in your home country since you will most likely be selling their too and need to meet local standards!

Who are the actual agencies that certify or give marks related to composting toilets?
As mentioned, there are lots! But, here’s the short list of agencies, where they are based out of (many have worldwide offices) and what they test for:

CSA (Canadian Standards Association)
Saftey, Performance, Wastewater Technology, Manufacturing Process

UL (Underwriter’s Laboratory)
Safety, Performance, Wastewater Technology

NSF (National Sanitation Foundation) USA Performance, Wastewater Technology