Humanure Safety and Rules

What is humanure composting?

Humanure composting is the practice of composting human waste in a bin or pile with carbon material, instead of sending it to a septic system or sewer. Supporters describe it as a way to return nutrients to the soil. Public health agencies describe it as a risk to manage.

The central issue is pathogens. Human waste can carry bacteria, viruses and parasites that cause illness, and some of them can persist in material that was not handled properly. That is why the topic is about safety first and enthusiasm second.

Books and websites on this topic often describe their own methods with great confidence. Treat them as reading material, not instructions, because they cannot account for your local rules, soil or household.

Is it legal to compost human waste on my property?

It depends on where you live. Many states and counties regulate how human waste is treated and disposed of, and some prohibit anything other than approved septic, sewer or permitted composting systems. Rules vary by state, county and town, and they can change.

Contact your county health department or onsite wastewater office. Ask whether humanure composting is allowed at all, whether an approved system or permit is required, and what penalties apply. Do not rely on a book, a video or a neighbor to answer this for you.

If you already have a system in place, tell your health office. Being honest early is much easier than being found out later, and an inspector may be able to tell you what changes would bring you into line.

What are the main health risks?

The main risks are illness from contact with raw or poorly treated waste and contamination of water or food. Children, older adults, pregnant people and anyone with a weakened immune system are more vulnerable, so ask a doctor or public health office about your household.

Contamination can travel in several ways, so careful handling matters at every step.

Households with young children deserve extra caution, since small children touch everything and wash poorly. Keep any bin locked or fenced and out of play areas.

• Hands, tools and boots that carry waste into the house or garden
• Runoff that reaches a well, pond or stream
• Flies and animals that move material around
• Produce that touches treated or untreated waste

Can I use it on my garden?

Many health agencies advise against using human waste compost on food crops, and some rules forbid it. Even where use on ornamental plants is allowed, there are usually limits on distance from wells, water bodies and property lines.

If you want to know what is permitted, ask your county health office and your extension office about the specific rules and about food safety guidance for gardens. Do not apply it to anything people eat unless an approving authority has told you it is allowed.

Wells and surface water deserve special attention. Ask your health office what distances are required and have your well tested on a schedule your local office recommends.

What safety habits matter if it is allowed?

Where a system is permitted, the habits come down to separation, cleanliness and patience. Keep the bin covered, away from water, and out of reach of children, pets and livestock. Wear dedicated gloves and boots, wash well, and keep tools separate from garden tools.

Follow the instructions of the approving agency exactly. Guesses about how long material needs to sit, or what counts as safe, are not a good basis for decisions. That information should come from your health office or a qualified professional.

Visitors and renters should be told about the rules too. A guest who does not understand the system may make a mistake that affects the whole household.

What are the alternatives?

If a code or a comfort level rules out humanure, you have other choices. A properly permitted septic system, a connection to sewer, or an approved composting toilet with a licensed hauling service can all meet a need for low-water sanitation.

Talk with a licensed septic designer or your county office about which of these fit your site, soil and budget. Cost categories include design, permits, installation, tanks or units, and long-term maintenance.

Whichever path you choose, put the plan, permits and maintenance dates in a folder. Good records protect your family and your property.

Last reviewed: November 12, 2026. Written by the Homestead & Small Farm Editorial Team. See our editorial policy.