How you dispose of human waste depends on where you are and what resources you have. Whether you’re camping in the backcountry, dealing with a power outage at home, living off-grid, or on a boat, each situation has a safe, legal method. The key principle across all of them is the same: keep waste away from water sources, minimize pathogen spread, and contain or break down the material before it reaches the environment.
Burying Waste Outdoors
If you’re hiking, camping, or otherwise in the backcountry, the standard method is a cathole. Dig a hole 6 to 8 inches deep, at least 200 feet from any water source, trail, or campsite. Do your business, then cover and disguise the hole with the original soil and natural debris. At that depth, soil microorganisms break down the waste naturally over weeks to months.
A few practical notes: bring a small trowel, because digging with a stick in rocky or root-filled ground is miserable. Choose a spot with organic soil (dark, loamy ground decomposes waste faster than sandy or clay soils). If you’re in a group camping in one area for several days, spread catholes out rather than clustering them. Toilet paper should be packed out in a sealed bag whenever possible, though burying a small amount deep in the cathole is acceptable in most areas.
Some environments don’t allow catholes at all. Desert parks, narrow river canyons, alpine zones above tree line, and high-traffic wilderness areas often require you to pack out all solid waste. In places like Guadalupe Mountains National Park, for example, the National Park Service requires all overnight backpackers to use commercial waste bags due to the rocky soil. Always check the rules for your specific area before heading out.
Portable Waste Bags
Commercial waste bags (sold under names like WAG Bag and Restop) are lined bags containing a powder that gels liquid and begins neutralizing waste. You use the bag, seal it, and carry it out. These bags are designed to be landfill-safe, meaning you can throw them in a regular trash receptacle once you’re back in civilization.
They’re lightweight, cheap (a few dollars each), and worth keeping in your car, emergency kit, or day pack. For a multi-day trip where catholes aren’t permitted, plan on one bag per person per day for solid waste, plus a few extras.
Emergency Bucket Toilets
When your plumbing is out during a storm, flood, or extended power outage, a 5-gallon bucket with a toilet seat lid is the most practical home solution. Line the bucket with a heavy-duty trash bag, and after each use, cover the waste with a scoop of carbon-rich material: sawdust, peat moss, wood shavings, or even shredded leaves. A good rule of thumb is roughly half a liter of cover material per use, or about 2 to 3 liters per person per day.
The cover material does two important things. It absorbs moisture, which dramatically reduces odor, and it creates the carbon-to-nitrogen balance that allows the waste to break down rather than just rot. If you can separate urine from solid waste (even something as simple as peeing into a separate container), you’ll cut down on smell and fill the bag much more slowly. Urine separation systems typically divert 50 to 95 percent of liquid, which makes a real difference in a bucket you might be using for days.
When the bag is full, tie it securely. In most emergency situations, your local waste authority will issue guidance on disposal, often designating specific drop-off sites. If no guidance is available, double-bag the waste and place it with solid trash headed for a landfill. Do not dump it in storm drains, ditches, or waterways.
Disinfecting Containers
After emptying and between uses, sanitize your bucket and any reusable components with a bleach solution: 5 tablespoons (one-third cup) of standard household bleach per gallon of room-temperature water. Let surfaces stay wet with the solution for at least one minute before rinsing. This concentration is effective against the bacteria and viruses found in human waste.
Composting Toilets for Off-Grid Living
A composting toilet is a permanent or semi-permanent system that breaks down human waste into a soil-like material through aerobic decomposition. The basic concept is the same as the emergency bucket (carbon material plus waste), but composting toilets manage airflow, moisture, and sometimes temperature to speed the process and kill pathogens more reliably.
For compost to be truly safe, it needs to reach and sustain temperatures above 131°F, the threshold at which most human pathogens are destroyed. Systems that maintain temperatures between 113°F and 160°F are in the thermophilic range, where heat-loving bacteria do the heavy work of breaking down waste and killing harmful organisms. Many commercial composting toilets are designed to reach these temperatures, but simpler DIY setups may not get hot enough, which means the compost needs a longer curing period (often a year or more) before it’s safe to use around plants.
Salmonella, one of the more resilient pathogens in human waste, can survive up to three months in compost held at room temperature. During the active thermophilic phase, though, it’s typically eliminated within a week. This is why temperature matters far more than time alone. If your system doesn’t reliably hit 131°F, longer curing and a second composting stage are essential safety steps.
Most composting toilet regulations vary by state and county. Some jurisdictions require a permit, specify minimum composting times, or restrict where finished compost can be applied. The Government of British Columbia’s composting manual, one of the more detailed guides available, recommends treating these systems as you would any septic alternative: check local health codes before installing one.
Incinerating Toilets
Incinerating toilets burn waste at high temperatures, reducing it to a small amount of sterile ash. According to EPA testing, the ash amounts to roughly 2 percent of the original waste weight and contains no detectable fecal contamination. You can dispose of it in regular household trash.
These systems run on electricity or propane and require no water or plumbing connections, making them popular for remote cabins and off-grid homes. The tradeoff is energy cost and cycle time: each use requires a burn cycle that can take 30 minutes to an hour, and the units consume significant power. They also produce heat and some odor during the burn cycle, so ventilation is required.
Waste Disposal on Boats
U.S. federal law prohibits discharging raw (untreated) sewage within three nautical miles of shore. Inside that three-mile line, any discharge must pass through a Coast Guard-approved treatment device. Beyond three miles, untreated discharge is generally permitted in open ocean, though some coastal states and waterways have designated no-discharge zones where all overboard discharge is banned regardless of distance or treatment.
For most recreational boaters, the practical options are a holding tank that you pump out at a marina, or a portable toilet that you empty at a shore-side dump station. If your vessel has a permanently installed toilet (called a marine head), it must be connected to either a holding tank or an approved treatment system. Fines for illegal discharge can be substantial, and marinas in no-discharge zones are required to provide pump-out facilities.
Why Proper Disposal Matters
Human waste carries bacteria, viruses, and parasites that contaminate water and soil. A single gram of feces can contain millions of pathogens, and many of these organisms survive in the environment far longer than people expect. Salmonella persists for months in soil and compost at moderate temperatures. Parasite eggs from organisms like hookworm and roundworm can survive in soil for years under the right conditions.
Contaminated water is the primary transmission route. This is why every disposal method emphasizes distance from water sources: 200 feet for catholes, three miles for marine discharge, and sealed containment for emergency situations. Even in a short-term emergency, taking five minutes to set up a proper bucket system instead of using a backyard trench near a well or stream can prevent serious illness for you and your neighbors.