Aquamation vs Cremation: What Families Should Compare
Two Paths to the Same Destination
Both aquamation and flame cremation reduce the body to bone minerals that are processed into a fine powder and returned to the family. The difference is in how they get there — and that difference matters more than most funeral homes explain.
Flame cremation uses natural gas or propane to heat a retort to between 1,400°F and 1,800°F. The body combusts over one and a half to three hours. Aquamation places the body in a stainless steel vessel filled with water and an alkaline solution. High-temperature systems heat it to 300°F to 320°F under pressure for four to six hours; low-temperature systems operate at 200°F at atmospheric pressure for twelve to sixteen hours. The water-based chemistry dissolves soft tissue while preserving bone integrity.
Cost Comparison
Flame cremation typically costs between $1,500 and $4,000. Aquamation ranges from $2,500 to $4,500. The price difference varies by provider and region. However, aquamation eliminates certain costs that flame cremation sometimes incurs. Pacemaker removal surgery, which flame cremation requires to prevent battery explosions, is unnecessary with aquamation. The device is recovered intact after the cycle.
Traditional casketed burial, for reference, runs $7,000 to $15,000 or more.
Environmental Impact
This is where the gap is widest. Flame cremation burns fossil fuel for hours, releasing CO₂, mercury vapor from dental amalgams, and particulate matter directly into the atmosphere. Aquamation uses up to 90% less energy and produces zero direct stack emissions — no mercury, no greenhouse gases from the process itself.
The liquid byproduct (hydrolysate) is a sterile solution containing dissolved human tissue, amino acids, sugars, and salts that is discharged into the municipal wastewater system under the requirements that apply in the jurisdiction. Some families find this fact unsettling before they understand that the liquid contains no DNA or pathogens.
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What You Receive Back
Aquamation returns 20% to 32% more remains than flame cremation. The bone minerals emerge whiter and finer because the low-temperature process does not scorch or oxidize them.
This volume difference has a practical consequence: standard 200-cubic-inch cremation urns will not hold aquamation remains for most adults. You need a vessel rated for 220 to 250 cubic inches. Families who discover this after the fact face a distressing scramble to split remains or find a larger container under emotional pressure.
Implant Handling
| Implant | Flame Cremation | Aquamation |
|---|---|---|
| Pacemakers/defibrillators | Must be surgically removed (explosion risk) | Safe to leave in; recovered intact |
| Titanium joints/rods | Survive but may warp or oxidize | Recovered pristine and unaffected |
| Dental amalgams | Mercury vaporizes into the atmosphere | Remain stable; recovered for recycling |
| Breast implants | May melt at high temperatures | Some may require surgical removal before processing; confirm the facility's protocol |
Availability
Flame cremation is available everywhere. Aquamation is legal in 29 U.S. states and five Canadian jurisdictions as of 2026, but availability varies and some jurisdictions have no active facility. New Hampshire explicitly prohibits the process.
If you are weighing both options and want a structured way to compare providers, costs, and legal availability for your specific situation, our Aquamation Coordination Guide includes a provider comparison worksheet and state-by-state reference.
Get Your Free Aquamation / Water Cremation Guide — Quick Reference
Download the Aquamation / Water Cremation Guide — Quick Reference — a printable guide with checklists, scripts, and action plans you can start using today.