Dreaming of dirty toilet is a negative sign as per dream meaning and interpretation. The dream means you will face unpleasant incidents in life soon. It also means you might face embarrassing situation in life.
Dreaming of dirty toilet and if it is of your house then you can expect unexpected problems in your family life. There can be both health issues and relationship issues.
Dream of dirty toilet and you have not seen it before means you will be forced to go to a new place and there you might face disturbing situations.
Dreaming of dirty toilet with other people in it means you will be maligned through scandal. People will try to spread false news about you.
Dream of dirty toilet and you are happy or elated then it means you might do something naughty and it will cause problems for your enemies.