I have a similar problem to @bcstew. I had a colostomy op nearly two years ago to remove a tumor in the rectum;, along with some lymph nodes; about a third of the colon was removed, leaving a short rectal stump of about 4cm.

I can't complain because my stoma behaves itself pretty well, apart from a bit of irritation. It's the rectal stump that is so annoying. It produces vast quantities of mostly clear mucus. Whenever I pass water, my anus joins in and produces anything from 10ml to 40ml every time. I have to wear a pad all the time but I usually avoid the problem because I just don't stand to pee any more or the pad just overflows. I have to sit down. I measure the quantity of mucus fairly regularly and it varies from 10ml to 40ml every time. I estimate 250ml per day (That's about half a pint!!!) The colo-rectal department just say it's normal but what explains the huge quantity?

There is an added complication. I had a radical prostatectomy about ten years ago, followed by radiotherapy. The RT has left me with a bladder which (particularly since the colon surgery) has been irritated and with a low level infection. The bladder and the rectum seem to be talking to each other and cystitis and mucus levels seem to be related.

My question is basically is the production of half a pint of mucus, daily, a normal event? That sort of quantity never seems to be mentioned in discussions about rectal mucus; it's always nasty looking lumps that won't come out. Mine's clear and very liquid. Also, with such a small stump volume, I have to conclude that it's largely produced at the time of passing water.