How Electricity Can Hurt You Electrical Safety-SMART! Home
Electricity and Water: A Dangerous Combination
Water is an excellent conductor. You can become electricity's path to the ground if you are touching water that touches electricity. Electricity would travel through the water and through you to the ground.
This is why it's so important to keep all electrical appliances away from water, and to make sure your hands are dry and you are not standing in water when you touch anything electrical. It's also the reason no one should ever use water on an electrical fire, but should use a multipurpose fire extinguisher instead.
Note: 
If you play with high-power water squirters, keep them away from power lines. If you shoot water at a power line, electricity can travel down the stream of water, right back to you!
