Aquamation Explained: Water Cremation, Cost, and Legality in 2026
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Time to read 15 min
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Time to read 15 min
Table of contents
Aquamation is the consumer name for alkaline hydrolysis, a water-based alternative to flame cremation. The process uses water, an alkaline solution (potassium or sodium hydroxide), heat between 199°F and 302°F, and 3 to 16 hours of cycle time to reduce a body to bone fragments and a sterile liquid. The bone fragments are dried, pulverized, and returned to the family as ashes. As of March 2026, aquamation is legal in 26 US states per the Cremation Association of North America, and Indiana and Kentucky are not among them.
The short version:
What to watch for: if a provider tells you aquamation is legal in Indiana or Kentucky today, they're wrong. Verify state legality directly with the Cremation Association of North America or your state funeral board before you sign anything.
Below: how the process works, how it compares to flame cremation, the Indiana and Kentucky legal status with bill history, the national map, the honest answer on cost, and what families in either state can do today.
Aquamation is the consumer name for alkaline hydrolysis. It's a water-based method of final disposition that produces the same end deliverable as flame cremation: pulverized bone fragments returned to the family as ashes. The technology has been used commercially since 1993, when the first system was installed at Albany Medical College for donated-body programs. Florida and Illinois became the first US states to legalize the process for funeral industry use in 2009.
You'll see the process called several different things, depending on who's selling, regulating, or describing it. Water cremation and flameless cremation are common consumer terms. Alkaline hydrolysis is the technical and regulatory name. Resomation and biocremation are trademarked equipment brand names. Green cremation and liquid cremation show up in marketing copy. In legal jurisdictions, the practice is authorized under one of four terms: alkaline hydrolysis, cremation, chemical disposition, or dissolution.
The American funeral industry first used the process for human disposition in 2011, in Ohio and Florida. Most states still don't authorize it.
Your loved one is placed in a single watertight chamber containing about 100 gallons of liquid, roughly 95% water and 5% alkali (potassium hydroxide or sodium hydroxide). The chamber heats to between 199°F and 302°F. Some systems run at high pressure with agitation. Others operate at atmospheric pressure. High-pressure systems complete the cycle in 3 to 8 hours. Low-pressure systems take 14 to 16 hours. For comparison, flame cremation operates at 1,400°F to 1,800°F and takes 2 to 3 hours.
When the cycle finishes, the chamber contains two outputs. The first is pure white bone fragments, which are dried and then pulverized to a consistency similar to flame cremation ashes. Those go back to the family. The second is a sterile liquid (sometimes called "hydrolysate" in industry materials) containing salts, sugars, amino acids, and peptides. No tissue and no DNA remain. The liquid is treated during the cycle itself, so when it leaves the chamber, it's already at a state acceptable for discharge to the local sanitary sewer. Discharge is authorized under federal, state, and local environmental regulations, with federal NPDES standards governing wastewater treatment downstream.
Two operational details I get asked about often: pacemakers and other heat-sensitive implants do not need to be removed before alkaline hydrolysis, except where state law requires it. And mercury from dental amalgam fillings is not vaporized, because temperatures stay well below mercury's boiling point. Fillings remain bound to the bone fragments and are recycled through standard EPA dental amalgam recyclers.
Both processes return pulverized bone fragments to the family as ashes. The differences sit in the chemistry, the time, the temperature, the volume of what you receive back, and the environmental profile. Side by side:
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Comparison Axis |
Aquamation (Alkaline Hydrolysis) |
Direct Flame Cremation |
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Process |
Water + alkali solution, heat, optional pressure |
Open flame in a retort |
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Temperature |
199°F to 302°F |
1,400°F to 1,800°F |
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Cycle time |
3 to 16 hours (depending on system) |
2 to 3 hours |
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What's returned |
Pulverized bone fragments |
Pulverized bone fragments |
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Ash volume |
~32% more than flame cremation, per CANA |
Baseline |
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Ash appearance |
Whiter, finer texture |
Off-white to grey, slightly coarser |
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Energy use |
~90% less than flame cremation, per CANA and equipment manufacturers |
Higher; uses natural gas or propane |
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Direct emissions |
None |
Combustion byproducts (regulated) |
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US availability |
26 states as of March 2026 (CANA) |
All 50 states |
Two of these rows need context. The ash volume difference comes from CANA and is the most authoritative source available; other sources cite 20% to 30%. The practical takeaway is that families choosing aquamation often need a larger urn than what's sized for flame cremation ashes. The ~90% less energy use is widely repeated but traces back to CANA and equipment manufacturers rather than independent peer-reviewed life-cycle analysis. I treat it as the best available figure, not settled scientific consensus.
If you're new to the flame cremation side of this comparison, our overview of what direct cremation is covers the baseline process, timeline, and what families receive back.
No. As of May 2026, aquamation is not legal in either Indiana or Kentucky. Neither state appears in CANA's March 2026 list of states where alkaline hydrolysis is authorized. The two states are on different paths, though, so it's worth looking at each separately.
Indiana came close to legalizing in 2025. House Bill 1044, authored by Rep. Mark Genda (R-Frankfort, a retired 40-year licensed funeral director), would have added alkaline hydrolysis to Indiana's legal definition of cremation. The bill passed the Indiana House 70-17 on February 6, 2025, then died in committee after moving to the Senate. The Indiana Catholic Conference registered opposition, citing the theological concerns the US Conference of Catholic Bishops outlined in March 2023.
Two parallel bills were introduced for the 2026 session: SB 22 (Sen. Brett Clark) and HB 1240 (Rep. Mark Genda). Neither received a hearing before the session adjourned on February 27, 2026. The 2026 session was short and condensed, with the legislature focused on tax conformity and local government priorities. The aquamation bills weren't defeated on the merits this session. They didn't get to the table.
The pattern I've watched play out: a House supportive of legalization, a Senate that hasn't moved the bill forward yet, and a 2026 session where the bill simply didn't get a hearing. I expect it to come back in the 2027 session, and I'm hoping for a hearing this time around.
One practical detail families don't usually think about. As a licensed funeral director and the Clark County Coroner, I work with death certificates every day. Indiana's disposition field accepts burial, cremation, or removal from state. There isn't an option for alkaline hydrolysis itself. For an Indiana family arranging out-of-state aquamation today, the funeral director recording the death uses "removal from state," which captures the transfer to another funeral home or service handling the disposition. That's the operational answer in 2026. If and when Indiana legalizes alkaline hydrolysis, the form will need a new option to record it directly.
Kentucky has no statute authorizing alkaline hydrolysis as a method of final disposition, and no 2026 bill is on the books. Kentucky does not appear in CANA's March 2026 list. The state has historically run behind Indiana on this question, and I don't see that changing in the immediate term.
A 2021 Kentucky Legislative Research Commission report explicitly noted that alkaline hydrolysis is used in other states but Kentucky has no statutes defining the practice. The state's cremation statute framework does not currently authorize the method. Bio-Response Solutions submitted detailed legislative testimony titled "Comprehensive Information on Alkaline Hydrolysis as a Form of Cremation" to the Kentucky Legislature on June 17, 2021. No enabling statute has been enacted since.
Kentucky families who want this option today arrange directly with out-of-state providers in neighboring states with active programs. Kentucky's death certificate works similarly to Indiana's, with "removal from state" available as a disposition option when a body is transferred to another funeral home or service. That's the path a Kentucky family would use today to document an out-of-state arrangement.
26 US states had legalized alkaline hydrolysis as of March 2026, per the Cremation Association of North America. The CANA list: Alabama, Arizona, California, Colorado, Connecticut, Florida, Georgia, Hawaii, Idaho, Illinois, Kansas, Maine, Maryland, Minnesota, Missouri, Nevada, North Carolina, Oklahoma, Oregon, South Carolina, Tennessee, Utah, Vermont, Washington, West Virginia, and Wyoming.
The states with active provider networks include Minnesota (the first to legalize, in 2003), Florida and Illinois (the first to authorize human use, in 2009), Oregon, California, Colorado, and Washington. Hawaii (2022) and Oklahoma (2021) are among the most recent additions.
A practical reality I've seen play out repeatedly: legalization doesn't equal availability. CANA reports about thirty practitioners across all legal US states. Several legal states have no operating providers, so families in those states face the same out-of-state arrangement logistics as families in non-legal states.
One outlier worth flagging: New Hampshire is the only US state with an explicit statutory prohibition under N.H. Rev. Stat. § 325-A:30. New Hampshire approved the process in 2006, then repealed the authorization in 2008.
For families weighing aquamation against other lower-impact options, we cover the full picture in our guide to eco-friendly cremation options in Indiana and Kentucky.
I'll tell you up front that as a flame cremation provider, I think both methods get a family to a respectful outcome. The honest answer on cost is that there isn't enough data to give you a reliable national median. I've watched families pull up "average aquamation cost" numbers from third-party aggregators, but the underlying sample is small and skews heavily toward one kind of provider. Here's why those figures look the way they do.
Who's actually offering aquamation right now. Most of the operators in legal states today are higher-end, cutting-edge boutique providers. They invested early in equipment that costs more than a flame retort and runs longer per cycle. They market the service as premium and price accordingly. Aggregator surveys reflect that population, not a broad cross-section of mainstream funeral homes. That's why you'll see prices clustered higher than what flame cremation costs in the same market.
Why mainstream funeral homes haven't picked it up yet. Alkaline hydrolysis equipment runs roughly $180,000 to $270,000 installed, per industry estimates, against about $130,000 for a flame retort. Cycle time is also longer (3 to 16 hours versus 2 to 3 hours), reducing daily throughput. Both factors push per-case pricing up. A flame cremation gets a family to the same end deliverable, pulverized bone fragments returned as ashes, at lower capital cost and faster turnaround. Until aquamation equipment prices come down meaningfully, I don't expect traditional funeral homes to add the service at scale.
What that means for the numbers you'll see. Direct aquamation typically runs several hundred to about a thousand dollars more than direct flame cremation in the same market, based on the boutique providers currently offering the service. The figure most useful to you is your local quote from a legal-state provider, compared to the flame cremation quote in your home state.
For Indiana and Kentucky families, the headline price is only part of the picture. Since aquamation isn't legal in either state, you're working with an out-of-state provider's price plus transportation across state lines, paperwork on both ends, and any refrigeration or holding fees. The total gap versus direct flame cremation in your home state can be meaningful.
By comparison, our Essential Cremation Package starts at $995 for direct flame cremation in Indiana and Kentucky, with city-specific totals depending on distance from our Jeffersonville crematory.
Want a specific total for direct cremation with Magnolia? Our pricing calculator shows itemized costs based on where you're starting from. No commitment, just clarity. Calculate your cost →
Families ask us about aquamation regularly. The two questions I hear most are whether Magnolia offers it today and, if not, when we expect it to be available.
On whether we offer it today. We don't. Aquamation isn't legal in Indiana or Kentucky, and Magnolia doesn't currently coordinate out-of-state arrangements either. The inquiries come in, but the operational workflow to coordinate transportation, paperwork, and provider relationships across state lines isn't something we've built out, because the number of families who want to actually pursue the arrangement (versus learn whether it's possible) has been small.
On when it'll be available. Once aquamation is legal in Indiana or Kentucky, we'll evaluate adding it. That isn't a promise to move on day one. It's a commitment to look at the option carefully and add it when we can offer it well.
That doesn't mean families who want aquamation today are without options. The method is legal in Illinois (since 2009) and Tennessee. The Indiana Catholic Conference noted in its 2025 statement that some Indiana families near the Indiana-Illinois border have arranged it in Illinois through local funeral directors. Tennessee is the closest legal-state option for Kentucky families, depending on where they live.
Practically, your two paths are:
If you call Magnolia and want aquamation, we'll be honest about the fact that we don't currently arrange it, and we'll help you think through whether to pursue an out-of-state arrangement or consider direct flame cremation closer to home.
Practical considerations for any out-of-state arrangement:
Faith tradition considerations. The US Conference of Catholic Bishops' Committee on Doctrine issued a March 23, 2023 statement concluding that alkaline hydrolysis does not satisfy the Church's requirements for proper respect for the bodies of the dead. The Church's stated objection focuses on the disposition of the roughly 100 gallons of liquid effluent, which is treated as wastewater. The Church does permit flame-based cremation under specified conditions, provided ashes are kept intact and laid to rest in a sacred place. I tell Catholic families considering aquamation to consult their parish. Families from other faith traditions should consult their own clergy. Denominational positions on aquamation specifically aren't well-documented across most traditions.
If you're weighing aquamation against direct flame cremation and have specific questions about what's possible in Indiana or Kentucky, we're glad to help you think it through. Speak with an advisor →
The cycle takes 3 to 8 hours in high-pressure systems and 14 to 16 hours in low-pressure systems, per CANA. Flame cremation, by comparison, takes 2 to 3 hours. For most families, total turnaround time ends up similar across both methods, because paperwork and scheduling drive the timeline more than the cycle itself.
Yes, generally. Many providers in legal states offer the option for the family to be present at the start of the cycle. Arrangements vary by provider. Indiana and Kentucky families arranging this out of state should ask the receiving provider directly about viewing options and any associated cost.
Aquamation produces about 32% more ash volume than flame cremation, per CANA, so the standard adult urn (about 200 cubic inches) is often too small. Ask the provider what volume of ashes to expect for your loved one and choose an urn sized accordingly. Most providers offer a temporary container included with the service.
Three main ones: availability, cost, and timing. The method is legal in only 26 US states as of March 2026 per CANA, and many legal states have few or no operating providers. It typically costs several hundred to a thousand dollars more than direct flame cremation, and cycle time is longer (3 to 16 hours versus 2 to 3).
This is the most common misconception about the process. The sterile effluent contains no tissue and no DNA. It's discharged at pH 11 or higher to the local sanitary sewer, where the treatment authority handles pH adjustment and standard processing before any release to surface waters. What's returned to the family is the bone fragments.
It depends. Indiana Medicaid's burial assistance benefit follows the decedent, not the funeral home, so an out-of-state funeral home can file a claim, though whether the program would pay a claim coded as alkaline hydrolysis specifically is unsettled. Kentucky Medicaid does not cover burial or cremation at all. Life insurance pays out regardless of disposition method, so those funds can be used for aquamation.
Confirm the provider holds the appropriate state license for alkaline hydrolysis. Ask whether they own the equipment or send work to a third-party crematory. Request an itemized price list as required under the FTC Funeral Rule (16 CFR Part 453). Ask how identity is tracked. For out-of-state arrangements, confirm who handles transportation and paperwork on both sides of the state line.
Aquamation's legal map will keep changing, and Indiana's 2025 House vote (70-17) was decisive enough that I expect legalization is a question of when, not whether. When that day comes in either Indiana or Kentucky, we'll look at adding the service carefully. Until then, families who want a simple, transparent direct cremation closer to home can get a city-specific total with our transparent itemized cost tool.