Louisville Water Company: backflow testing rules
Serves Louisville and Jefferson County, KY. Every point below comes from Louisville Water Company's own pages, linked; check your notice for your own deadline.
Who must test
- Customers must have every containment backflow device tested annually by a certified technician, with results sent to the cross-connection control office. Irrigation, fire, commercial and multi-family services are covered. Source.
- If an irrigation service is already winterized, Louisville Water can extend the test requirement until the service is activated in spring; turning the irrigation meter off suspends the annual test requirement. Source.
Notices and deadlines
- Customers whose device is due receive a 30 Day Testing Letter, then a 14 Day Testing Letter warning that failure to comply will result in further action. Source.
- Where a device is needed but not installed, Louisville Water sends a 90 Day Installation Letter and then a 14 Day Installation Letter. Source.
How the report is filed
- Testers submit copies of passing test reports within 10 days to the cross-connection control office by email (crossconnection@LouisvilleWater.com), fax or mail. Source.
Tester registration
- A certified backflow tester is an individual who holds a certificate for testing backflow preventers in the Commonwealth of Kentucky, and must keep a test kit maintained and calibrated when necessary. Source.
Fees
- Industrial and commercial customers, including multi-family, pay a monthly cross-connection control fee on their statement to support the program. Amount not stated on the page. Source.
Program
- Louisville Water's cross-connection page explains its notice letters; the customer is responsible for installation, testing and making sure the contractor submits reports. Source.
How to file your backflow test with Louisville Water Company
- Read your notice. Customers whose device is due receive a 30 Day Testing Letter, then a 14 Day Testing Letter warning that failure to comply will result in further action.Source.
- Book a tester Louisville Water Company accepts. See finding a tester below; book early so there is time to repair a failed assembly.
- The tester tests the assembly and fills in the test report. A failed assembly is repaired and tested again.
- The report is filed. Testers submit copies of passing test reports within 10 days to the cross-connection control office by email (crossconnection@LouisvilleWater.com), fax or mail.Source.
- Fees. Industrial and commercial customers, including multi-family, pay a monthly cross-connection control fee on their statement to support the program. Amount not stated on the page. Source.
- Keep a copy and set a reminder for next year. Set a free test-due reminder.
Finding a tester Louisville Water Company accepts
We found no tester list on Louisville Water Company's own pages. Use a state certified tester, and check your notice in case it names the testers or the portal it accepts.
Before you book, ask the tester:
- Are you registered with Louisville Water Company?
- Will you send the test report to the utility for me, and how?
- When is my report due? The date is on your notice; the tester needs time to test, repair if needed and file.
Read October 6, 2026. Program page: louisvillewater.com.