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Backflow Salt Lake - Serving All of Utah!  801-214-9625


Q: Why does water sometimes dump from my backflow?

  1. If the pressure on the downstream side exceeds a certain differential pressure it an RP or a PVB will dump water until the differential pressure is restored.
  2. A small rock, sand or other debris gets stuck on a surface of the seals.
  3. Damage due to neglect or vandalizing, freeze damage is the most common in my experience.
  4. Improper installation.  

Q: Does the water need to be on to test?

Yes, the water supply to the device being tested is necessary. You can shut off the water to the system at the backflow to prevent water flowing at the # 2 shut off (downstream valve).

Q: Do I need to test the assembly if we are not using the city water?

Yes, unless the water purveyor says otherwise.

Q: Can I remove the backflow device if I don’t use city water to water my lawn?

Yes, the water provider or city inspector will have to inspect the property to insure that there is no physical connection to their system. This may involve digging up the sprinkler valve and capping the line, the inspector will verify while the hole is open.

Q: Why does the backflow have to be above the ground?

The building codes no longer allow lawn sprinklers to be protected by the double check assembly or a check valve. The other backflow devices for lawn sprinklers are required to be 12” or more above the flood plain.

Q: How do I prevent freeze damage?

  1. Drain the water before freezing temperatures.   
  2. Have a heated enclosure.

Q: Any suggestion on how to prevent theft.

  1. Paint it, don’t paint the name plate.
  2. Cover it, fake rocks are great.
  3. Cage it, expensive.
  4. Hide it, out of site out of mine.


Q: Why is it required that I have a backflow assembly or device installed on my sprinkler system?  A: The State of Utah Division of Drinking Water, under the direction of the Environmental Protection Agency (EPA), has instituted a State regulation regarding Cross Connection Control.  The State of Utah requires each City or municipality to adhere to State regulations and implement a Cross Connection Control Program.  The City of South Salt Lake is held responsible to ensure these regulations are met.

Click HERE to view the State of Utah Administrative Code: Cross Connection Control Regulation. Click HERE to view the South Salt Lake City Municipal Code: Cross Connection Control Ordinance (Title 13; Division II; Chapter 13.68).

Q: What are the chances of contamination to City water from a sprinkler system? A: The chance of contamination to a water system from a sprinkler system is low, however, it has occurred.   Please remember that the first line that will be affected by contamination from your sprinkler system will be the service line to your home.  This State regulation is in place to keep you and your family safe.

Q: Why is it required to test my backflow assembly and/or device annually? A: According to the State of Utah Administrative Code pertaining to Cross Connection Control:

Backflow prevention assemblies shall be inspected and tested at least once a year, by an individual certified for such work as specified in R309-305. Suppliers shall maintain, as proper documentation, records of these inspections. This testing responsibility may be borne by the water system or the water system management may require that the customer having the backflow prevention assembly be responsible for having the device tested.

The City of South Salt Lake requires that the customer having the backflow prevention assembly be responsible for having the device tested as well as making sure the completed test forms are sent into the City’s Water Division.

Q: Where can I find more information on Cross Connection Control A: Please see further information below regarding Cross Connection Control:

Click HERE to view the EPA Best Practice Guide.

Click HERE to view the EPA Cross Connection Control Manual.


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