 [ Symptoms ] what can cause bright green urine [ Disease ] what an interesting question urine color can be an important tool in diagnosing illness for example red or pink urine can be caused by blood but it also can be caused by eating beets or rhubarb interesting right  green urine frequently is caused by dyes such as those found in vitamins however green urine also can indicate a urinary tract infection caused by a specific bug called pseudomonas bacteria while the cause of green urine generally is not harmful if you have any of these additional symptoms you should see a doctor frequent urge to urinate pee bladder pain pain with urination peeing cloudy urine fever andor chills nausea andor vomiting these symptoms can indicate a urinary tract infection which needs to be treated by a health care professional hope this helps