Water Cremation and Human Composting in Wisconsin: What's Legal in 2026

If you've heard about water cremation (aquamation) or human composting and want either for a Wisconsin death, you'll face an immediate problem: neither is legal in Wisconsin right now. As of mid-2026, the Wisconsin Department of Safety and Professional Services does not license alkaline hydrolysis facilities, and no legislation legalizing natural organic reduction has been enacted. Families who prefer these methods have options, but they require crossing a state line.

What Alkaline Hydrolysis (Water Cremation) Actually Is

Alkaline hydrolysis — marketed under trade names like aquamation, flameless cremation, and biocremation — is a process that uses water, heat, and an alkaline chemical solution (potassium hydroxide) to dissolve soft tissue over several hours. The result is a liquid effluent that is neutralized and disposed of through the wastewater system, and a white bone ash that is returned to the family in much the same way as conventional cremation ash.

Families are drawn to alkaline hydrolysis for several reasons. It uses roughly 90 percent less energy than flame-based cremation. It produces no direct air emissions — no mercury vapor from dental amalgam, no carbon dioxide from combustion. The process is described by many funeral professionals as gentler, and the bone ash returned is typically whiter and more voluminous than flame cremation ash.

The process is also fully compatible with conventional memorial services. The timing is similar to standard cremation, and families can still hold a viewing before the process occurs, receive cremated remains within a comparable window, and scatter or inter the remains in the same ways they would after flame cremation.

None of this has been enough to clear Wisconsin's legislative and regulatory path.

Legal Status in Wisconsin

Alkaline hydrolysis is not authorized in Wisconsin. The Wisconsin Department of Safety and Professional Services, which licenses funeral directors, funeral establishments, and crematories, does not recognize alkaline hydrolysis as a permitted form of final disposition. No facility in Wisconsin may legally offer this service.

The primary legislative vehicle for legalization was Senate Bill 228, which sought to formally authorize alkaline hydrolysis as an acceptable form of disposition under Wisconsin law. The bill failed. Opposition came from multiple directions, with the Wisconsin Catholic Conference among the most prominent voices against it. The Conference argued that the process — specifically the dissolution of the body in liquid and disposal of the effluent through the sewage system — was not consistent with the dignity owed to human remains under Catholic teaching.

Beyond religious objections, legislators and regulators raised practical concerns about the effluent. Alkaline hydrolysis produces a large volume of alkaline liquid that must be discharged into municipal wastewater treatment systems. Questions about the capacity of Wisconsin's municipal treatment plants, the adequacy of existing effluent regulations, and liability for treatment facilities contributed to skepticism about the bill.

Senate Bill 228 did not advance out of committee. As of 2026, no successor legislation appears on the immediate horizon. Families hoping that the law will change before they need to make a disposition decision should not plan around that assumption.

Human Composting (Natural Organic Reduction) in Wisconsin

Natural organic reduction — also called human composting or terramation — accelerates the natural decomposition of human remains through a controlled process of heat, airflow, and organic material (wood chips, straw, alfalfa). Over approximately 30 to 45 days, the body is reduced to a nutrient-rich soil amendment that families can take home, use in a garden, or donate to conservation land.

Human composting is also not legal in Wisconsin. There is no current legislation pending to authorize it. The states that have legalized natural organic reduction — including Washington (the first, in 2019), Colorado, Oregon, Vermont, Nevada, California, and New York — have each done so through specific enabling legislation that Wisconsin has not passed. Washington's Recompose facility, the first to offer the service commercially, charges in the range of $7,000 for the process.

The regulatory framework required to permit natural organic reduction involves amendments to funeral regulations, environmental rules governing soil amendment use, and public health oversight. In Wisconsin, that framework does not exist and there is no active legislative push to create it.

What Families Can Do: Out-of-State Options

Wisconsin law does not prohibit families from transporting a deceased person across state lines to a state where alkaline hydrolysis or natural organic reduction is legal. Both Minnesota and Illinois authorize alkaline hydrolysis, and a Wisconsin family could arrange for the body to be transported to a licensed facility in either state.

The logistics require care. Transporting human remains across state lines requires a burial-transit permit issued in Wisconsin. The body must be transported by a licensed funeral director or in accordance with the receiving state's regulations. The Wisconsin funeral home or body transportation service handles the paperwork on the Wisconsin side; the out-of-state facility handles authorization on their end.

The cost of transport adds to the overall expense. For families in Milwaukee, Madison, or other southern Wisconsin cities, the distance to a Minnesota or Illinois facility may be manageable. For families in northern Wisconsin, the logistics become more complex and expensive.

If you are pre-planning your own final disposition and want alkaline hydrolysis or natural organic reduction, the most reliable approach is to pre-arrange with a licensed facility in Minnesota or Illinois directly, document your wishes clearly, and ensure your designated disposition agent understands the process. A pre-need contract with an out-of-state facility creates a legal and financial commitment that reduces ambiguity for your family.

Body donation to a medical school or anatomical gift program is another option entirely and is fully legal in Wisconsin. After use, donated bodies are typically cremated and the cremated remains returned to the family — it is not the same as choosing your own disposition method, but for families whose primary motivation is contributing to science or reducing disposition costs, it is worth considering.

What Is Available in Wisconsin Right Now

For families who want an environmentally conscious disposition within Wisconsin's legal framework, the options are:

Standard flame cremation remains the most common disposition method in Wisconsin and has a significantly lower resource footprint than full-service burial. With direct cremation, a body can be cremated without embalming, without a casket, and without a formal service at the funeral home — keeping both cost and environmental impact lower. Cremated remains can be scattered on private land (with landowner permission), in the Great Lakes at least 3 nautical miles offshore, or at designated scattering gardens.

Green burial — without embalming, without a concrete vault, in a biodegradable container — is legal in Wisconsin and available at cemeteries that permit it. Several Wisconsin cemeteries have natural burial sections or operate as fully green cemeteries. This is the most environmentally aligned option that keeps the burial within Wisconsin.

Body donation through a Wisconsin medical school program such as UW School of Medicine and Public Health or the Medical College of Wisconsin provides a meaningful alternative. The body contributes to medical education and research, disposition costs are covered by the program, and cremated remains are returned to the family afterward.

None of these options is alkaline hydrolysis or human composting. For families who specifically want those methods, the current law requires looking outside Wisconsin's borders.

Wisconsin's failure to legalize alkaline hydrolysis and human composting is not unusual among Midwestern states, but it does leave Wisconsin families with fewer choices than those in neighboring states. The situation may eventually change through legislation, but planning decisions need to be made based on what the law is today, not what it might become.

For a full picture of Wisconsin's funeral and disposition laws — including what cremation permits require, your consumer rights with funeral homes, and the estate steps that follow any death — visit our Wisconsin Funeral Law guide.

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