This issue is typically caused by digging too close to a water line, then accidentally breaking it. This is common when homeowners install garden stakes or fence posts and accidentally damage one of these lines. If this is the case for your home, then you should call a sprinkler repair technician immediately.

Why is my sprinkler system water pressure low?

If the pressure is low at only one or two sprinkler heads, they may simply be dirty. Examine the sprinkler head and filter and clean if needed. Grass can also grow around the base of the sprinkler heads and cause them not to pop up fully, so trim and clear away any obstructions.

Can a sprinkler valve cause low water pressure?

The most common cause of low water pressure in sprinklers is the backflow preventer valves not opening fully. There are two main pipes in your backflow preventer – one horizontal and one vertical. Each pipe has a handle that can be turned to run with the line or across to open the valve.

How do I fix low pressure in my sprinkler zone?

Quote from the video:
Quote from Youtube video: Just past the sprinkler. Tee. Then I'll glue a 3/4 by 1/2 inch threaded bushing into the three-quarter inch slip coupling and thread in a half inch automatic drain into the threaded bushing.

Why does one of my sprinkler zones have no pressure?

Often when your sprinkler system was running fine, and then one zone began to lose water pressure, the culprit is a leak in the zone’s lines or a leak at a nozzle or two. Leaking nozzles won’t produce the same water pressure and need to be replaced, which is fairly simple.

How do I increase the water pressure in my sprinkler system?

Hook up a sprinkler booster pump for your hose.



All you do is hook your hose up to the pump, and then hook another hose up that runs from the pump to the sprinkler. Plug the pump in and turn the water on. The pump will artificially force water out of your weak water line at a much higher psi.

How do I increase the water pressure in my sprinkler zone?

Remove a few sprinkler heads from each of the zones in your system and cap the plumbing that led to them. Decreasing the number of sprinkler heads will increase the water pressure in those that remain.

How do I check my sprinklers water pressure?

Quote from the video:
Quote from Youtube video: The best place to start checking your pressure is the first hose bib you have in your front yard that comes off of the main line your water main line from the street you use a pressure gauge.