If your water pressure suddenly drops to nothing or to a small trickle, the cause is likely a broken water main. Call the emergency service number 24 hours a day, seven days a week at (770) 270-6243.
If you have been experiencing low water pressure on an ongoing basis, check to see if the low pressure only occurs in certain parts of the house or only from the hot or cold water tap. If the answer is yes to either of these, this would indicate a problem with your home's interior plumbing. You may need to contact a plumber.
If the low pressure is noticeable throughout the entire house and tends to drop when more than one faucet is being used, further investigation is needed. Call (770) 270-6243 to report these problems. This number is answered 24 hours a day, seven days a week.
Another cause of low water pressure is high demand during periods of low supply.