Weeping sprinkler head repair
Water showing up when the system is off — a wet patch at the bottom of the yard, a valve box that never dries, a head that keeps running after the zone stops. Local & insured across Cary, Raleigh and Wake County.
Weeping sprinkler head repair starts with one question: does it stop, or does it keep going?
Water appearing when nothing is running has two very different explanations, and telling them apart takes about two minutes. If the water runs for a minute or two after a zone shuts down and then stops on its own, that is the pipe emptying itself and it is a hardware fix. If it keeps going all day, something upstream is not sealing and it is a repair.
The first case is what the trade calls low-head drainage. Every lateral holds water after a zone finishes, and on a sloped yard gravity walks that water down to the lowest head on the run and pushes it out. On flat ground nobody notices. On the rolling lots around Apex, Holly Springs and west Cary it produces a permanent soggy patch, and clay underneath means it never soaks away. It also pulls grit back into that head as it drains, which is why the low head on a slope is always the one clogging.
We diagnose and repair weeping irrigation across Cary, Raleigh, Apex, Morrisville, Holly Springs, Fuquay-Varina and Wake County — part of our irrigation repair service.
Why water shows up when nothing is running
Diagnosed right and fixed with genuine Hunter, Rain Bird & Toro parts.
Low-head drainage
The lateral empties through the lowest head after every cycle. It stops on its own within a couple of minutes. The fix is check valves — either heads with them built in or inline checks on the run — which hold the column of water in the pipe instead of dumping it on your lawn.
A zone valve not seating
Grit on the seat or a worn diaphragm lets water past continuously, so one zone trickles day and night. This one never stops on its own, which is how you tell it apart. See sprinkler valve repair.
A master valve not sealing
When the master valve fails to close, the mainline stays pressurised all week and every small imperfection downstream starts leaking. Fixing the weep means fixing the master valve first.
A cracked lateral holding pressure
A split pipe under a wet spot behaves differently from a draining head — the ground stays saturated between cycles and the area spreads. Usually needs locating before digging.
A blown head seal or cracked riser
Water pushing up around the body of a head rather than out of the nozzle. Common after a mower strike or a freeze that was not blown out properly.
Backflow relief discharge
An RPZ dumping from its relief port looks like a leak and is actually the assembly telling you a check valve is fouled. Different part, different fix, and worth ruling in early.
What you are actually seeing
- A wet patch at the low point of the yard that never dries out
- One head still running a minute after the zone shuts off
- A valve box with standing water in it
- Moss, algae or sunken turf in one spot
- The water bill crept up with no change in schedule
How the work happens, step by step
No mystery, no runaround — here’s the order we work in.
Time it
We watch what happens after a zone shuts down. Water that stops within two minutes is drainage; water still moving twenty minutes later is a seal that is not sealing. That single observation decides everything that follows.
Isolate the zone
We work out which zone the water belongs to, because a wet spot is often fed by a run nobody suspects. Running zones one at a time tells us more than any amount of digging.
Check pressure upstream
If more than one zone weeps, the master valve or the mainline is the suspect rather than any individual valve. We test the mainline holds pressure with everything closed.
Fit the right fix
Check valves for drainage, a rebuild or replacement for a valve that will not seat, a pipe repair for a split. We tell you which one it is before anything comes apart.
Recent work around the Triangle
What our Triangle neighbors say
Why homeowners choose us
We separate drainage from a leak
Most of these calls are one of two things and they cost very different amounts. Getting that right in the first two minutes is the whole job, and it is where a lot of money gets wasted otherwise.
Check valves sized to the slope
A check valve holds a limited column of water. On a yard with real elevation change, putting them only in the bottom head does not work. We fit them where the run actually needs them.
Honest diagnosis and a guarantee
We test the actual parts before quoting and give upfront pricing with no surprises. Every repair is backed by a 100% satisfaction guarantee and a 12-month workmanship warranty.
Weeping sprinkler head repair in Cary, Raleigh & the whole Triangle
Sloped lots and clay soil make this a common Triangle call, and most of it is a same-visit fix. Choose your town for local details: Cary · Raleigh · Apex · Morrisville · Holly Springs · Fuquay-Varina.
Related services we handle on the same visit: sprinkler valve repair · sprinkler pipe repair · irrigation leak detection.
Weeping sprinkler head repair FAQ
Why does one sprinkler head keep running after the zone shuts off?
That is low-head drainage. The water left in that zone’s pipe runs downhill and out through the lowest head on the run. It is normal physics rather than a fault, but it wastes water and makes a permanent wet spot, and check valves stop it.
How do I tell a leak from normal drainage?
Time it. Drainage stops on its own within a minute or two of the zone finishing. A leak keeps going — hours later there is still water moving. If you are not sure, watch the spot two hours after the system has run.
Will check valves fix any weeping sprinkler?
Only the drainage kind. If a valve is not seating or a pipe is split, check valves do nothing and you have paid for the wrong repair. That is why we time it before we quote.
Is a wet spot in the lawn always the sprinklers?
No. Standing water can be a grading or runoff problem that has nothing to do with irrigation, which is a different service entirely. We check whether the spot dries out when the system is switched off for a few days.
Do you fix weeping sprinklers near me?
If you are in Cary, Raleigh, Apex, Morrisville, Holly Springs, Fuquay-Varina or anywhere in Wake County, we cover your area. Call or text 919-341-9644.
Get your free quote
Tell us what’s going on and we’ll get right back to you — usually the same day. Prefer to talk? Call or text 919-341-9644.
- Local & insured
- Upfront pricing — no surprises
- 100% guarantee + 12-month workmanship warranty
Wet spot that will not dry out?
We tell you in two minutes whether it is drainage or a leak, then fix the right one. Call or text 919-341-9644.