Click on Follow This Quest and follow the blue footprints to the Drink Trough which is straight up ahead.
Once you find the Drink Trough, click on Drink water as the intructions says and you complete the quest.
|Quest Giver||Hope Simmons|
|Objective||Drink water from Drinking Trough|
|Rewards||120 Experience Points, 150 Dino Dollars|
The quest box will then gray out and get check marked. Click on it and click Get Reward, then Take Items.