Hydrocremation, also referred to as Aquamation or alkaline hydrolysis, is a process used for the disposition of human and animal remains. It utilises circulating water, warmth, and an alkaline pH to facilitate the gradual breakdown of the body - replicating natural decomposition but at a faster rate. Unlike traditional cremation, which employs extreme temperatures to incinerate a body, hydrocremation operates at lower temperatures and results in the formation of a liquid effluent. This method is considered to be more environmentally friendly, as it produces significantly fewer greenhouse gases, allows for more complete decomposition of the remains and the remaining effluent can be used as a potent fertilser for plants as the process breaks down organic material to the smallest building blocks of life e.g. amino acids, sugars and salts.

During the hydrocremation process, the remains are placed in a chamber filled with a water and potassium hydroxide solution. The combination of warmth, high pH and cycling water accelerates the breakdown of organic matter, leaving behind only the inorganic bone fragments. These fragments, once dried, can be cremulated into a fine powder, the same as ashes produced by traditional cremation. The remaining liquid is sterile and can be safely disposed of, often being returned to the environment.

Hydrocremation is gaining acceptance as a sustainable alternative to traditional burial and cremation methods, appealing to individuals who prioritise environmental considerations in end-of-life decisions.