Originally Answered: brown water appeared in toilet bowl and toilet tank this morning.help?
It may be that some dirt got into the main line to your place and it found it's wat to that toilet first. That usually happens if you're on a city/community water supply and they were doing some repairs on their line somewhere near you, once they're done and they turn the water back on some dirt and/or rusty water will be in the line and eventually into some homes for a short while until it's all flushed out of the pipes. If it doesn't clear up after a few flushes and/or the water becomes brown or dirty elsewhere too then more investigating for the problem will need to be done. Flush out your cold water line by opening the cold water faucet at your bath tub and let it run for a few minutes. If the water remains clear then all is well, if it becomes dirty then all is not well somewhere.
The bubbling shower drain may be that the main sewer/drain line is partially clogged (or partially frozen if it's cold enough there), sewer drains can slowly freeze up too if it gets cold enough around them. If it's ice in the line draw a bucket full of hot water only from your kitchen sink or other bathroom (not the shower or bathroom where the problem is). Pour the hot water down the shower drain and that may melt any ice/frozen area if it's nearby, it could be partially frozen many feet away and the hot water will not be effective enough. It could also be partially or fully clogged from just the sewage waste too, in that case you'll need a plumber to fix that problem if it does break loose on it's own. If you see dirty water backing up into any shower, tub, and/or sink then you have a sewer line clogged somewhere. It will always backup to the lowest tub/shower drain first so it's easy to detect. You can do a test on the sewer drain by using the shower, open the faucet and let it run for 4-5 minutes and see if it backs up or not and if it seems to drain as it should. If it's totally clogged the shower floor will fill with water quickly, if it's partially clogged the shower floor will slowly fill with water as some of it will slowly drain at the same time. But if the shower drain itself is partially clogged from soap scum and hair it will drain slowly too and all bath, shower, and sink drains will eventually become clogged over time from soap scum and hair and need cleaning.
Find yourself an experienced handyman and make friends...or marry the guy :)