The coach has 8 liters * 1000 ml/liter = <<8000=8000>>8,000 ml of water.
She pours 200 ml/player x 30 players = <<200*30=6000>>6,000 ml of water in total for all the athletes.
The water spill means 6,000 ml + 250 ml = <<6000+250=6250>>6,250 ml of water was used.
There was 8,000 ml - 6,250 ml = <<8000-6250=1750>>1,750 ml of water left.
#### 1750