Hunting and fishing lodges have been using Sun-Mar units for quite some time. They do not wish to pollute the very water that gives them their livelihood with an aging drain field.

 The effects from septic drain fields can easily change the entire ecosystem of a lake over the course of a half-century.

Composting Toilets

Many years ago Sun-Mar engineers realized that to work properly, these three tasks required independent chambers, each with its own separate environment.

This revolutionary new 3 chamber approach first developed in 1979 proved so successful that today it is incorporated into all Sun-Mar units.

A composting toilet must perform
3 completely separate processes:

• Compost the waste and toilet paper quickly and odorously
• Ensure that the finished compost is safe and easy to handle

• Quickly evaporate liquid

Safety and Certificates

• Sun-Mar is the only composting toilet company to have systems produced in an ISO-9002/QS 9000 certified production facility. This essentially means that Sun-Mar is officially committed to quality and making the best product that it possibly can.
• The First Composting Toilet to Be Listed With NSF Standard 41. At present, Sun-Mar is the only small-load composting toilet system (cottage and regular residential use) to be listed with the NSF
• SEMCO Certified - 220 Volt Units.SEMCO is a Swedish organization which controls and regulates 220 volt electrical systems. SEMCO certification is recognized by every country in the EEC (European Economic Community).
• Electrical Features are CSA approved LR 55925-2. CSA, or the Canadian Standards Organization, is the body which controls and regulates all electrical systems for goods sold in Canada. CSA certification is recognized by UL, its American counterpart.

There are two different categories of Sun-Mar systems to choose from, Self-Contained units and Central Composting Toilet Systems. All of our models, 22 in number, fit into one or the other category. Within each category, we offer units for any power system; on-grid, off-grid, or no power at all.

Finding the toilet best suited to your needs is as easy as answering a few simple questions. Do you want a flush toilet? Do you want to avoid putting in plumbing? Do you need a unit for four or more residential users? Choose your category based on these general preferences.

On all central units, waste entry is on the left, and compost travels along to the right. On Centrex 1000 and Centrex 2000 units, compost is extracted into the drawer by rotating the drum backwards. On Centrex 3000 series units compost passes right through the unit and out into a collection chamber. Bulking material is added with the scoop provided after first removing or lifting the access port on the left, and then rotating the drum until the waste entry port is opposite the access port.

All central units are fitted with a removable evaporating tray which is located under the screen, and a drawer at the right into which composted material can be removed by rotating the drum backwards. All three central units families can accommodate a 1 pint flush toilet, whereas a Dry Toilet can only be used with Centrex 2000 and 3000 series units.

Self Contained Models:
(One Piece) - Larger units see below

Excel: Toilet with Large Bio-Drum. 6 Adults or families of 8

• High Capacity
• Electric, Non Electric or Dual Voltage

Compact: 3 Adults or families of 4

• Electric Model - no foot rest
• Medium Capacity

Space Saver: 3 Adults or families of 4

• Narrow, 19" X 22" Electric Model
• Medium Capacity

Self Contained Toilets

Self Contained models are waterless, and so require no connection for water or sewage. This makes installation very quick and easy!

Self Contained models are more suited to winter operation because it is often easier to keep the bathroom warm.

Capacity is up to 6 adults seasonally, 3 adults residentially (Excel model).

Self-contained units are installed directly in the bathroom and are available in both electric and non-electric. Electric units plug into a regular three pin outlet to power a fan and a thermostatically controlled heating element. The unit is normally unplugged if it is not being used for 3 days or more.

Composting capacity varies with the size of the Bio-drum. Electric units normally have more capacity than non-electric units because they have extra warmth and air movement.

Although advertised composting capacities can be doubled for short periods, Sun-Mar has found that wherever possible it is always better to have a good margin of safety. So, pick a unit with more capacity than you really need.

Compost Toilet Mulch - 10 Pound Bag

Maximize performance with Sun-Mar's Exclusive Sterile Composting hemp/peat moss mix.

Compost Sure retains moisture while maintaining good porosity so liquid can drain through the compost - leaving free air space (oxygen) behind. This helps to mechanically break up the compost and provides a good source of carbon; essential for efficient composting

Microbe Mix

This 16 oz. jar of bacteria allows you to increase the bacterial population and hence the composting activity. Ideal for adding at spring startup in the place of topsoil, which may not contain the proper bacteria needed for the composting action.