Water which is safe for human consumption, free from harmful or objectionable materials as described by the Virginia Department of Health.
What is a non-potable fluid?
Any water, other liquid, gas, or other substance that is not safe for human consumption, or is not a part of the public potable water supply as described by the Virginia Department of Health.
What is a cross-connection?
A cross-connection is any temporary or permanent connection between a public water system or consumer's potable (i.e., drinking) water system and any source or system containing non-potable water or other substances. An example is the piping between a public water system or consumer's potable water system and an auxiliary water system, cooling system, or irrigation system.
What is backflow?
Backflow is the undesirable reversal of flow of non-potable water or other substances through a cross-connection and into the piping of a public water system or consumer's potable water system. There are two types of backflow – backpressure backflow and backsiphonage.
Backpressure backflow is backflow caused by a downstream pressure that is greater than the upstream or supply pressure in a public water system or consumer's potable water system. Backpressure (i.e., downstream pressure that is greater than the potable water supply pressure) can result from an increase in downstream pressure, a reduction in the potable water supply pressure, or a combination of both. Increases in downstream pressure can be created by pumps, temperature increases in boilers, etc.
Backsiphonage is backflow caused by a negative pressure (i.e., a vacuum or partial vacuum) in a Public water system or consumer's potable water system. The effect is similar to drinking water through a straw.
Why do water suppliers need to control cross-connections and protect their public water systems against backflow?
Backflow into a public water system can pollute or contaminate the water in that system (i.e., backflow into a public water system can make the water in that system unusable or unsafe to drink).
What is a backflow preventer?
A backflow preventer is a means or mechanism to prevent backflow. The basic means of preventing backflow is an air gap, which either eliminates a cross-connection or provides a barrier to backflow. The basic mechanism for preventing backflow is a mechanical backflow preventer, which provides a physical barrier to backflow.
Why do backflow preventers need to be tested periodically?
Mechanical backflow preventers have internal seals, springs, and moving parts that are subject to fouling, wear, or fatigue. Also, mechanical backflow preventers and air gaps can be bypassed. Therefore, all backflow preventers have to be tested periodically to ensure that they are functioning properly. A visual check of air gaps is sufficient, but mechanical backflow preventers have to be tested with properly calibrated gauge equipment.
Do I have to send in the backflow device test results or does the tester?
Many testers voluntarily submit test results for their customers; however, it is your responsibility to ensure it arrives at our office on time to avoid water service termination. Make sure your tester gives you a copy of your test results and completes the LEESBURG Backflow Test Report Form.
Where do I get the backflow device test form or who has the backflow device test form?
Do I still have to have the backflow device tested if I'm not going to use my irrigation system?
If you have an irrigation system, you must either have the backflow device installed and tested every Spring by June 1st, or permanently cut and cap the system, have the work inspected by the Town’s Environmental Compliance Inspector, and sign a Memorandum of Understanding stating the system will no longer be used. Penalty for reconnection without notification to the Town beforehand, is a violation of the Town’s Cross Connection Control Program and punishable by misdemeanor charge, fine of up to $2,500, and one year in jail. Call 703-737-7592 for further information.
Can you recommend a backflow tester?
We recommend that you select a tester by checking references, comparing prices, and using information available. You must ensure that the tester does have certification for backflow testing.
How do I know if I need a backflow test?
If you have a lawn irrigation system or a fire sprinkler system, you are required to have a backflow device installed and tested annually. Devices connected to irrigation systems MUST be tested annually and results submitted to the Utilities Department by JUNE 1ST.
Is it okay for trucks to hook up to the fire hydrants?
It is okay if the truck has been inspected by the Utilities Department and if they have a blue hydrant meter attached to the fire hydrant. Please review photos of the Town’s hydrant meters and notify us at 703-771-2762 if you see a different colored meter or do not see a meter connected. After hours, please contact the Leesburg Police Department at 703-771-4500.
I want to install an irrigation system, what do I need to do?
You or your irrigation contractor must obtain a Loudoun County plumbing permit, install the proper backflow prevention device, and inform the Town's Utility Department of your system.
Your contractor must apply for a plumbing permit through Loudoun County Building & Development.
Why do I have to test my backflow preventer every year?
To ensure that the device is functioning properly and the water supply is protected from contamination. Your device is a mechanical unit that has internal seals, springs, and moving parts that are subject to wear or fatigue. The annual test ensures a properly functioning device and certifies that the device has not been removed or had a by-pass line installed around it. If the assembly fails the initial test, it must be repaired or replaced, and retested with passing results submitted to the Town's Environmental Compliance Inspector.
How do I know when my annual backflow testing is due?
The Utilities Department will send you a letter to remind you to have the backflow prevention device tested and passing test results submitted. Devices connected to residential lawn irrigation systems are tested annually when the system is turned on, BUT NO LATER THAN JUNE 1ST.