What are the backflow prevention requirements?

Backflow Prevention devices are required on all fire sprinkler service lines, all landscape irrigation service lines, most commercial buildings, and in some cases residential domestic water services. All costs, installation, testing and maintenance of backflow prevention devices are the sole responsibility of the customer.

Yearly Testing

Yearly testing reports must be submitted to the Public Works Department. Submit device specifications for City approval prior to installation. Backflow Prevention devices must be tested immediately after installation, and yearly, with test reports submitted to the Public Works. Questions related to backflow prevention should be emailed to the City Environmental Compliance Analyst.

Approved Reduced Pressure Backflow Devices

  • Apollo RPLF4A (3 to 12 inches)
  • Febco LF860 (3 to 10 inches)
  • Watts LF009M2 QT (1 to 2 inches)
  • Watts LF009M3 QT (3/4 inch)
  • Zurn Wilkins 375 (3 to 10 inches)
  • Apollo RPLF4A (3/4 to 2 inches)

Approved Double-Check Detector Assemblies

  • Apollo DCDALF4A (3 to 12 inches)
  • Febco MasterSeries 856ST (2-1/2 to 10 inches)
  • Watts Series 757DCDA, 757NDCDA (2-1/2 to 10 inches)


In-Ground Meter or Bypass Detector is required on all backflow devices. In most cases, backflow device must be located immediately after water meter, at street right-of-way line or within 15 feet maximum of water main. For potable/domestic water use, all wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures used to convey water must meet the January 4, 2014 “Reduction of Lead in Drinking Water Act” and contain less than 0.25% lead by weight.

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1. How can I get information about utility service?
2. What are utility flow-based fees for typical uses?
3. What are the payment options for utility connection charges?
4. How long will it take to provide water/sewer service to a residence?
5. When should I pay utility connection charges?
6. When will the city install new utility services to a residence?
7. Where will the new water/sewer services be located for my residence?
8. How do I unlock my water meter, set up, activate or change a city utility account?
9. Why are utility connection fees charged?
10. What do I need to do if I have a change-of-use, increase in use or additional use at my property?
11. If my water/sewer is already connected, why do I need an availability request form?
12. Are utility connection charges transferable or refundable?
13. Do utility connection charges expire?
14. What needs to happen if a building connected to city water and sewer is being demolished?
15. The property is outside city limits; why should I contact the City for utility service?
16. Is city water/sewer connection mandatory?
17. What is the difference between gravity sewer versus pressurized (forcemain) sewer?
18. How do I get installation and connection of private building service line to water/sewer service?
19. What are the requirements for existing well and septic tank after connection to city water/sewer?
20. What is the responsibility for maintenance and repair of service connections?
21. What is the landscape irrigation water meter?
22. What are the backflow prevention requirements?
23. Is the city responsible for water/sewer service installation?