I recently (over the past 4 months give or take) started to drink .5-1 gallons of unsweetened iced tea a day. I have noticed that my urine has darkened with my fluid intake. My local water supply changed and now is very unpleasant to drink, so I have opted for store bought tea. Prior to the water source change I would intake 1-1.5 gallons of water a day. I am wondering if there are any adverse effects of consuming this much tea on an everyday basis? My urine has darkened but is still within an acceptable color range.