The goal of the Nolensville/College Grove Utility District is to supply safe water to each and every customer under all foreseeable circumstances, and to ensure that all customers are aware of the potential hazards associated with backflow and cross-connections.
Cross-connections are defined as; the physical connection of a safe or potable water supply with another supply of unknown or contaminated quality or such that the potable water could be contaminated or polluted.
Backflow is a hydraulic condition, caused by a difference in pressures, that causes non-potable water or other fluid to flow into a potable water system.
If you have any of the following items, a backflow device or air gap system may be required.
- Lawn Irrigation systems
- Residential fire protection systems(closed loop systems)
- Pools, saunas, hot tubs, fountains
- Auxiliary Intakes and supplies such as: wells, cisterns, ponds, streams, etc.
- Home water treatment systems
- Garden hoses immersed in any type container or attached to a sprayer
- Any other situation or condition deemed a threat by the water system
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Click Here for Inactive Irrigation System Certification
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Backflow Device Testing:
N/CG Utility District has contracted with American Backflow Inspectors (ABI) to test all irrigation and commercial backflow devices. National Fire Sprinklers, Inc tests all fire sprinkler systems.
ABI will begin testing irrigation systems in May of each year. It is the customer’s responsibility to have the backflow device ready to test. For suggestions on how to be ready for your backflow test, click here.
American Backflow Inspectors also has helpful suggestions on how to be ready for your backflow test on their web site.
Please click on the link to ABI’s web site to find out more:
Fire system tests begin in October of each year. You will be contacted prior to performing the test.
Please contact the office if you have any questions or concerns at (615) 776-2511.
Click Here for Installation Backflow Criteria
Examples of Backflow Capping:
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