Hi I live in the northeast. Last month temps went down into the single digits. Had some burst pipes in my house. Around the same time started having a problem with dirty water backing up into the kitchen sink and dishwasher in the 1st floor apartment. (They had not been in use since the summer time.) At first it was water backing up from dishwasher to sink or the reverse-sink to dishwasher. However, now both are filling up with water, at the same time, periodically until they overflow. Took steps to clear clogged drain (plunging, Drano) because thought that might have been the problem. However, don't think it is a simple clog because I'm finding sediment and on occasion what looks like mud in the sink. Trying to get an idea of what I'm dealing with before I contact a plumber. Thanks for any insight you can offer!!