Water Usage and Terramation: How Does Natural Organic Reduction Compare? (colloquially referred to as human composting)

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Direct Answer

Does natural organic reduction use water? Yes — moisture is an essential ingredient in the natural organic reduction (NOR) process, supporting the microbial activity that transforms a body into soil. However, specific volume figures for NOR process water have not been widely published as of April 2026. What the data does show clearly is where NOR stands relative to other disposition methods: alkaline hydrolysis (water cremation) uses the most water of any modern disposition method — approximately 300–400 gallons per body — while flame cremation uses virtually none directly. Conventional burial introduces a different water concern: embalming fluids that leach into soil and groundwater, plus significant cemetery irrigation. Terramation appears to require far less water than alkaline hydrolysis, though precise consumption figures have not yet entered the published record.

How much water does terramation use compared to other disposition methods?

Terramation requires moisture for microbial activity but uses far less water than alkaline hydrolysis, which consumes approximately 300–400 gallons per body as a primary process medium. Flame cremation uses almost no direct water but releases ~535 lbs of CO2. Conventional burial with embalming introduces ~3 gallons of formaldehyde-based fluid per body into soil, plus ongoing cemetery irrigation that can exceed 293 million gallons annually at a single large site. Specific per-cycle water figures for NOR have not been published as of April 2026.

Terramation uses moisture for microbial activity but far less than alkaline hydrolysis — specific gallon figures have not been published as of April 2026.
Alkaline hydrolysis (aquamation) is the most water-intensive method, requiring approximately 300–400 gallons per body discharged as effluent.
Flame cremation uses almost no water but emits ~535 lbs of CO2 from fossil fuel combustion — low water use trades against high carbon cost.
Conventional burial with embalming introduces ~3 gallons of formaldehyde solution per body; the largest U.S. cemetery uses ~293 million gallons of water annually for irrigation.
Acknowledging data gaps — like the unpublished NOR water figures — builds more credibility with environmentally literate families than citing invented numbers.

Why Water Usage Matters in End-of-Life Planning

Water is a finite resource. Families and funeral professionals making disposition decisions increasingly want to understand not just carbon footprint and land use, but full-cycle environmental impact — including how much water each method consumes, what happens to that water, and what it carries with it into the environment.

This article walks through the documented water profile of each major disposition method. Where the data exists, it is cited. Where it does not — particularly for NOR — that gap is named clearly rather than papered over with invented figures.

For a broader look at terramation’s environmental credentials, see our terramation soil quality and environmental impact overview and how terramation works.

Disposition Method Comparison: Water Usage at a Glance

Disposition Method	Direct Water Use	Indirect Water Concerns	Notes
Terramation (NOR)	Minimal — moisture required for microbial activity; specific volume not published	None documented	Water figures not publicly available as of April 2026
Alkaline hydrolysis (water cremation)	~300–400 gallons per body	Effluent discharged to municipal sewer	Highest direct water use of any disposition method
Flame cremation	Negligible direct water use	High energy and CO2 cost	Natural gas combustion; no water used in the process itself
Conventional burial (with embalming)	~3 gallons embalming fluid per body	Cemetery irrigation; groundwater leaching risk	Formaldehyde-laden fluid leaches from caskets over time
Green / natural burial (no embalming)	None	Some cemetery irrigation depending on site	Lowest overall water footprint

Terramation: What We Know About Water

Terramation — also called natural organic reduction — transforms human remains into nutrient-rich soil through microbially driven decomposition. The body is placed in a vessel with organic co-materials such as wood chips, alfalfa, and straw, and managed for temperature, oxygen flow, and moisture.

Moisture is not incidental to this process. It is one of the four essential conditions — alongside carbon-rich material, nitrogen, and oxygen — that allow thermophilic microbes to do their work efficiently. Operators carefully manage moisture levels throughout the process: too much moisture creates anaerobic conditions that slow decomposition; too little stalls microbial activity altogether.

What the public record does not yet contain is a specific volume figure — a number of gallons of water used per NOR cycle. Major NOR providers note that terramation uses “far less water” than alkaline hydrolysis, with available environmental comparisons rating soil transformation’s water use as “minimal.” However, no provider or regulatory body has published a standardized water consumption figure as of April 2026.

This is consistent with NOR being a relatively young regulated industry. Washington’s operational regulations under WAC 246-500-055 focus on the safety and composition of the final soil output — testing for pathogens and heavy metals — rather than process inputs like water. The Washington State Department of Health administers NOR licensing under this framework, established following the passage of WA SB 5001 in 2019.

What this means: Families and operators can say with confidence that terramation uses far less water than alkaline hydrolysis. They cannot yet cite a precise gallons-per-cycle figure, because that figure has not entered the public record. That honest acknowledgment is consistent with the science-forward values that draw families to NOR in the first place.

Alkaline Hydrolysis: The Most Water-Intensive Method

Alkaline hydrolysis — marketed under names such as aquamation, water cremation, resomation, and hydromation — uses a pressurized chamber filled with heated water and an alkaline solution (typically potassium hydroxide) to accelerate the body’s natural decomposition over a matter of hours.

The water requirement is substantial. Published environmental impact analysis cites approximately 300–400 gallons per body for aquamation, noting that the resulting liquid effluent must be discharged into the municipal sewer system. Wikipedia’s entry on alkaline hydrolysis, drawing on Texas A&M University data, provides a more technical range: approximately 60–240 gallons of water per body processed, producing 120–300 gallons of liquid effluent.

For context: 300–400 gallons is roughly equivalent to what the average American family uses in a single day at home, according to EPA WaterSense data. It is also more water than a typical week’s worth of showers for one person.

That water does not simply evaporate. The effluent — a sterile liquid containing amino acids, peptides, and mineral salts — is discharged into the municipal wastewater system, where it undergoes standard treatment. Proponents of alkaline hydrolysis argue the effluent is harmless and beneficial, noting that it can potentially be used as a liquid fertilizer. Critics of the method in earlier years focused on this discharge question, though most jurisdictions that have legalized alkaline hydrolysis have concluded the effluent meets wastewater standards.

Alkaline hydrolysis does offer meaningful advantages over flame cremation: it uses roughly one-quarter the energy of flame-based cremation and produces significantly lower CO2 emissions. Its water footprint, however, is the trade-off. See our comparison of terramation’s CO2 profile versus other disposition methods for more on the emissions dimension.

Flame Cremation: Low Water, High Energy

Flame cremation is the most widely used disposition method in the United States, with NFDA projecting a 63.4% cremation rate in 2025. It involves temperatures between 1,200 and 2,000°F sustained over approximately two hours, powered almost entirely by natural gas.

In terms of direct water use, flame cremation is minimal. The process itself does not require water. What it does require — and consume in large quantities — is fossil fuel energy, producing an estimated 535 pounds of CO2 per cremation along with carbon monoxide, nitrogen oxides, sulfur dioxide, and vaporized mercury from dental fillings.

Flame cremation’s environmental liability is not water: it is carbon and air quality. For a detailed comparison of emissions, see NOR vs. flame cremation emissions data and terramation’s role in reducing the death-care industry’s carbon footprint.

Conventional Burial: Water in the Soil and on the Surface

Conventional burial’s water footprint comes from two directions: the fluids introduced into the body before burial, and the water used to maintain cemetery grounds afterward.

Embalming Fluid

Embalming is used in approximately 40% of conventional burials in the United States. The process uses roughly three gallons of embalming fluid per body — a formaldehyde-based solution diluted with water. According to figures compiled by Interra Burial, an estimated 2.4 million gallons of embalming fluid are introduced into the ground through buried bodies each year in the US, containing approximately 97,740 gallons of formaldehyde.

Formaldehyde is classified as a probable human carcinogen by the EPA. As caskets degrade over time, these fluids leach into surrounding soil and, potentially, into groundwater — a long-term environmental concern that is distinct from the acute water consumption of other methods but no less significant.

Families choosing conventional burial can request that embalming be omitted; it is rarely legally required. Green burial — which forgoes embalming, uses a biodegradable container, and typically avoids the turf-maintenance requirements of traditional cemeteries — has essentially no direct water footprint.

Cemetery Irrigation

The ongoing water cost of conventional burial extends beyond the burial itself. Traditional lawn cemeteries require regular irrigation to maintain turf. Published environmental analysis cites a striking benchmark: the largest cemetery in the United States uses approximately 293 million gallons of water annually for grounds maintenance.

This figure applies to a single site. Nationally, across thousands of maintained cemeteries, the cumulative irrigation demand is substantial — and it continues indefinitely, for every year a burial plot remains in use. Unlike a one-time disposition process, this is a permanent, ongoing water cost.

What Families Should Know

If you are researching disposition options from an environmental perspective, here is the water story in plain terms:

Terramation uses water as part of the composting process, but specific volume data has not been published. Available evidence suggests it uses far less water than alkaline hydrolysis.
Alkaline hydrolysis is the most water-intensive option, requiring approximately 300–400 gallons of water per body that is then discharged as effluent. It does, however, offer significant carbon and energy advantages over flame cremation.
Flame cremation uses almost no water directly, but its carbon and energy footprint is the highest of the common disposition methods.
Conventional burial with embalming introduces formaldehyde-based fluids into the ground, with long-term leaching risks. Cemetery irrigation adds ongoing water demand that has no end date.
Green burial has the lowest water footprint overall, requiring no embalming and minimal or no irrigation.

The Regenerative Living Soil™ produced through TerraCare’s terramation process returns organic matter to the earth — a direct soil benefit rather than an environmental liability. For families prioritizing a genuinely regenerative environmental outcome, that full-cycle view matters alongside any single metric like water.

Ready to explore terramation options? Contact TerraCare Partners to learn about services in your area.

What This Means for Your Facility

For funeral home operators and NOR facility managers, water usage is an underused frame in environmental marketing — particularly because the conventional burial comparison is compelling and often overlooked.

The Alkaline Hydrolysis Comparison

If your facility offers or is considering both NOR and alkaline hydrolysis, water usage is a meaningful differentiator. Families who are environmentally engaged and asking about carbon footprint often have not yet considered water consumption. Introducing this dimension — accurately, with the acknowledgment that NOR-specific figures are not yet published — demonstrates both expertise and integrity.

You can say: “Natural organic reduction requires moisture for the composting process, but it uses far less water than alkaline hydrolysis, which requires approximately 300–400 gallons per body.”

The Conventional Burial Comparison

The embalming fluid story is underutilized in environmental conversations. Nearly 98,000 gallons of formaldehyde enter US soil annually through embalmed burials. Cemetery irrigation at a single large site can exceed 293 million gallons per year. These are real, documentable numbers that contrast sharply with the soil-building outcome of NOR.

The Data Gap as a Trust-Builder

Operators sometimes worry that acknowledging a data gap undermines their environmental credibility. The opposite is true. Families researching NOR are often highly literate consumers who will notice if claims are inflated. Saying “specific water consumption data for NOR has not been widely published as of April 2026, but available evidence indicates it is minimal compared to water cremation” is a more credible and more durable statement than a fabricated figure.

For guidance on framing terramation’s environmental benefits across multiple metrics for your families, talk to TerraCare Partners.

Sources

Interra Burial — “How Many Gallons of Embalming Fluid Are Buried Each Year?” (documented figures: ~3 gallons per body; ~2.4 million gallons annually in the US; ~97,740 gallons of formaldehyde). https://www.interraburial.com/blog/how-many-gallons-of-embalming-fluid-are-buried-each-year
Wikipedia — “Alkaline hydrolysis (body disposal)” (Texas A&M-sourced data: 60–240 gallons water per 1,000 lbs biomass; 120–300 gallons effluent). https://en.wikipedia.org/wiki/Alkaline_hydrolysis_(body_disposal)
US EPA WaterSense — “How We Use Water” (average American family uses more than 300 gallons/day). https://www.epa.gov/watersense/how-we-use-water
NFDA — 2025 Cremation and Burial Report Statistics (63.4% projected cremation rate; 61.4% interest in green funeral options). https://nfda.org/news/statistics
Washington State Legislature — WAC 246-500-055, Human remains reduced through natural organic reduction (operational standards for NOR facilities in Washington; no water use provisions). https://app.leg.wa.gov/wac/default.aspx?cite=246-500-055
Washington State Legislature — SB 5001 (2019), legalizing natural organic reduction and alkaline hydrolysis in Washington State. https://app.leg.wa.gov/billsummary?BillNumber=5001&Year=2019