This might sound like an entry level question, but after years of doing it my way I still wonder if there are any good alternatives. After racking from primary bucket into keg, bottling bucket or secondary, I wash out the remaining sediment in my bucket down the basement utility sink drain, and hose a lot of water, usually hot, down the drain after the yeast sediment to ensure it all gets down my pipes to the sewer without building up in my drain pipes. Do you do the same, or do you have another solution? The way I do it is time saving and easy, but it does require quite a bit of hot water. Thanks!
Aside from drying it and (selling it to someone who will be) using it to make supplements/nutrients/feedstock, that’s the only way I know of.
Mine gets washed down the driveway, along the curb and into the gutter. I’m pretty sure that at the levels we’re using, the yeast doesnt pose any issues to the waste water treatment facilities.
If you’re sending the yeast down an indoor drain, it’s no problem. The sewage treatment process is largely based on bacteria consuming organics. Any live yeast may actually help.
Sending the yeast down a curb drain may be a problem. Any newer city has separate storm and sanitary sewers. Street storm drains go to the nearest river, and a yeast slurry would be an un-natural organic load, reduce water quality, and cause areal stench if not flushed by a decent rainstorm.
it goes in the compost. or directly in the garden.
+1 Mine goes in the compost bin.
I take my fermenters outside and just hose them off on the lawn. Or if it’s cold out I’ll just dump the first couple of rinses on the lawn behind the front porch.
reuse at least once, then dispose! the best beers I make are done on a yeast cake. hey, that rhymes…
I don’t have a garden and therefore no composter either, but I’ll definitely try the lawn fertilizing option prior to snow season. I’m already a lawn clippings mulcher rather than a bagger. Thanks all!
Down the drain into the septic tank here.
If I don’t give it to my wife for the composter, I usually just toss it into the garden.
Mine goes down the drain with the garbage disposal running.
+1
If you have a septic system it should actually be beneficial for it. RidX ready to go! 
My understanding is that yeast competes with beneficial bacteria for oxygen is septic systems. This is why municipalities do not want live yeast in their water treatment plants.
I give the yeast nice warm bath over 120F for 30 min and down the drain they go.
Composting is a fine option.
I already had house drain plugged with yeast.
Now that you mention it I remember this as well. I think it is BS, but I remember hearing it.
Most likely yeast in the septic system just dies or becomes dormant. I doubt there is much for it to consume since it has evolved to ferment maltose.
I dump plenty of yeast into our septic tank, and I’ve never had the guy pumping it out say there seemed like there was anything wrong or odd with our tank given the time between pumpings.
Could be, but it certainly doesn’t hurt!
A quart of yeast slurry in a river will cause “an un-natural organic load, reduce water quality”?
Really?
Kind of like spitting in the ocean.