"The Irrigation Conversation". Colostomy irrigation is a method of bowel management for people who have an end colostomy in the descending or sigmoid colon. It is a process that those with a stoma perform by passing a water enema into the large bowel via the stoma, to evacuate the contents in a controlled way. This episode explains the eligibility criteria for irrigation, the process and the pro's and con's of performing this regular ritual.