Nearby, the bathroom includes a composting toilet and a Home Depot sink on a pedestal Chris made from chunks of found wood.

Since septic systems are impossibilities on Criehaven, the Porters chose a Sun-Mar self-contained composting toilet as the ideal alternative.

Just off the bedroom, a restrained bathroom combines Duravit D-code sinks with Techno by Cifial faucets and a Toto Aquia toilet.

Bacsac Composter Bag, from $75 The French garden brand makes composting a snap with easy-to-carry geotextile bags that store plant waste as it transforms into organic fertilizer.

An Envy II Wall-Faced Suite toilet by Parisi sits in the home’s sole bathroom and Caroma’s Starlett 1850 Island Bath was installed next to the window.

Sinks and a toilet from Laufen’s Il Bagno Alessi line add a sculptural presence to the master bathroom.

The automatic arm that raises and lowers the flapper can be set up so that it stays open for the correct amount of time each flush—that means never having to tell guests to jiggle the handle.

Bacsac Composter Bag, $75–$95 at the Dwell Store Made in Bacsac’s signature geotextile fabric, this Composter Bag is available with 5.2 gallon or 10.5 gallon capacity, and is a simple solution to at-home composting.

The master bathroom is clad in inexpensive tile from Daltile. The wall-hung toilet is by Duravit.

Replacing the old toilet with a wall-hung Duravit model continues the floating theme, which is echoed by the custom recessed magazine caddy. The room’s sole freestanding piece is a glass-sided cabinet from Restoration Hardware. The diamond-shaped tile is from the Dwell collection at Heath Ceramics.

The home’s earthy color scheme complements the exterior landscape, which is ever-visible through grand windows.

Smart-flush toilets You can save enormous amounts of water by buying the right appliances. In the bathroom, choose smart-flush toilet systems, like the Double-Cyclone mechanism employed in the TOTO Drake® II 1G Two-Piece Toilet, pictured. The system uses two nozzles to siphon water in a centrifugal, cyclonic motion, eliminating the need for multiple flushes.

1993 Stefano Giovannoni designs Merdolino toilet brush for Alessi.

“There is no silver bullet, but there is silver buckshot. Small solutions can be impactful.”

The small bathroom is fully equipped with a shower, sink, and composting toilet.

They introduced sustainable features—like geothermal heating and composting toilets—wherever the building could support them.

In the master bathroom, Godmorgon vanities from Ikea stand next to a dual-flush Aquia toilet from Toto. A Tolomeo Wall Spot lamp, designed by Michele De Lucchi and Giancarlo Fassina for Artemide, hangs above the mirror.

The standard Living Vehicle models come with an all-porcelain, foot-flush toilet. Customers can also upgrade to an electric toilet with a bidet or a composting toilet.

Both traditional and composting toilets are available to accommodate off-grid living.

A small yet full-sized bath houses a tub, compost toilet and sink.

The home is also outfitted with a full bathroom with a composting toilet and a stacked washer-dryer unit.

The wood-clad bathhouse, which holds a shower and composting toilet, is topped with a corrugated PVC roof.

For when there just isn't storage space to hide away certain water closet accessories, designer Josh Owen created the WC Line. Made from silicone and tanoak wood, this three-piece set includes a wastebasket, plunger, and toilet brush. It's available in black, white, red, blue, and orange.

The bathroom is outfitted with a composting toilet and a large window. The designers placed storage beneath the stair treads that lead to the main bedroom.

A sliding barn door accesses the bathroom, where the Jungbauers installed a compost toilet and low-flow fixtures for the sink and the shower.

The Food Cycler by Food Cycle Science, $530 In urban environments, composting can be a challenge—it takes time and space and frequently yields a malodorous aroma. Enter the Food Cycler: In as little as three hours, it quietly turns food scraps into soil without the hassle, mess, or olfactory offenses associated with traditional methods.

“Worth every penny,” says Tina of the $1,000 composting toilet, which allows the family to unplug and go off the grid.

Eco-friendly features like solar panels and rainwater catchments keep this retreat's environmental footprint small. Immediately to the right of the entry is the main living space, which features a Jetmaster 700D wood-burning fireplace with a tiled hearth.

Dubbed Small But Fine, a student-built 280-square-foot cabin in Finland connects with the outdoors and features a minimal footprint. Not pictured is a detached outhouse with a composting toilet.

The bathroom includes a Separett Villa compost toilet, a shower, and vanity. A black hexagonal tile with white grout was used for the bathroom floor.

The architect and his team devised an armature on the back of the container that will eventually be covered with vines, concealing the AC and heating unit, the reservoir for graywater and the composting toilet outlet.

Low-maintenance systems and mechanics like the on-demand water heater, compost toilet and wood-burning stove were chosen because of their ease and longevity.

Jack and Jill Bath with step in shower room, polished concrete floors, natural light

The bathroom features a freestanding tub made from an upcycled feeding trough from a farm, and a salvaged door. There is a composting toilet, and water comes from a 1000-liter rainwater tank located on the second floor.

With its original aluminum facade polished to a high shine, the fully restored Airstream is designed to go off-the-grid with rooftop solar panels with an inverter, a composting toilet, and a large water tank.

The bathroom is outfitted with a Nature's Head composting toilet, stainless steel sink, and custom cabinets. The countertop and curved wall are built from cedar. The LED lighting strips add a modern touch.