Human: How can I tell if the water in my tap is safe to drink? Assistant: 
The best way to tell if the water in your tap is safe to drink is to check for any visible signs of contamination. Look for discoloration, cloudiness, or a foul odor. You should also test the pH level of the water and compare it with the recommended range (6.5-8.5). If the pH level is outside of this range, you may want to consider boiling the water before drinking it.