Drip irrigation fails in ways spray zones do not, and almost all of it comes back to filtration and pressure. A loaded filter starves the zone, a failed pressure regulator either collapses the flow or blows emitters and fittings apart, and individual emitters clog with sediment or mineral deposits. Add damage hidden under mulch, and you have the great majority of drip faults.
Why drip hides its own problems
A broken spray head announces itself — water goes up in the air where somebody eventually sees it. Drip is designed to release water slowly at soil level, usually under mulch, which means a drip zone can fail completely and look identical to a drip zone working perfectly.
The symptom is almost always the plants rather than the water. Beds declining while the turf thrives, one end of a bed struggling, a shrub dying in an otherwise healthy planting. By the time it is visible, the zone has often been down for weeks.
The reverse happens too: a split drip line under mulch can run for a long time without surfacing, saturating one area and quietly adding to the bill, because mulch absorbs and disguises it.
The causes
| Cause | Symptom |
|---|---|
| Filter clogged | Whole zone weak or dead — the most common drip fault by a distance |
| Pressure regulator failed low | Emitters barely weep, or nothing reaches the far end |
| Pressure regulator failed or absent | Blown emitters, split tubing, fittings pushed apart |
| Individual emitters clogged | Isolated plants declining while neighbours are fine |
| Line cut or punctured | One area soaked, everything past the damage dry |
| Tubing kinked, crushed or root-pinched | Everything downstream of the pinch is starved |
| End cap or fitting blown off | Water dumping at one point, no pressure through the zone |
| Zone valve not opening | Nothing at all — a valve fault rather than a drip fault |
| Line displaced by mulching or planting | Emitters now watering bare ground or pavement |
| Run time too short | Drip applies water slowly by design — spray-zone run times do not suit it |
Filtration and pressure are the two that matter
Drip emitters have very small openings, which is how they meter water slowly and evenly. That also makes them intolerant of two things: particles and pressure.
Particles come from the supply and from the system itself — sediment in the lines, mineral deposits, debris mobilised by a repair elsewhere. The filter exists to catch them, and it therefore loads up and needs cleaning. A neglected filter is the single most common reason a drip zone goes weak, and cleaning it is the cheapest fix in irrigation.
Pressure is the other. Drip components operate at far lower pressure than spray heads, and the pressure regulator is what makes that possible on a system shared with spray zones. Without regulation, or with a failed regulator, mainline pressure reaches components never designed for it — emitters blow out, tubing splits, fittings separate. Regulated too low and the far end of the zone never gets water at all.
On a well or lake-fed system both problems intensify, because raw water carries more sediment and pump pressure is often less consistent.
Want this looked at rather than read about?
Diagnostic-first visits across North Georgia. Call 770.335.8595 or request service — you get an estimate before any work begins.
Checking a drip zone
- Run the zone and confirm water is arriving at all. If the valve is not opening, it is a valve problem rather than a drip problem — that is a different diagnosis entirely.
- Check the filter first. Before anything else. A loaded filter explains most weak drip zones, and the check takes a minute.
- Compare the near end with the far end. Healthy at the near end and nothing at the far end points at pressure, a partial blockage or a pinched line. Uniformly weak points at filtration or regulation.
- Check individual emitters by hand. Pull the mulch back and feel for output. Several dead emitters in one run, with others fine, is different from all of them being weak.
- Look for wet ground and blown fittings. A saturated area or a bare patch of soil washed clean under the mulch marks a split or a separated fitting.
- Follow the tubing where you can. Kinks, crush damage, root pinching and staples driven through the line are all found this way.
- Check the run time. Drip needs considerably longer run times than spray zones to apply a comparable amount of water. A drip zone on a spray-zone schedule underwaters, and nothing about it looks broken.
Keeping it working
See drip irrigation repair. Irrigation Medics bills $125 for the first hour on site and $80 per hour after, with parts separate and an estimate before work begins.
- Clean the filter on a schedule rather than when a zone fails. This is the highest-value drip maintenance task there is.
- Verify the pressure regulator is present and functioning, particularly after any work on the system.
- Flush the lines periodically to move accumulated sediment out through the end rather than into the emitters.
- Mark where drip lines run, and tell anyone mulching, edging or planting. A shovel or a staple through a line is an ordinary way for drip to fail.
- Keep drip on its own zone with its own run time. Sharing a zone with spray heads makes a correct schedule impossible for either.
- Drain and protect the filter, regulator and header before winter — they sit at or near the surface and are exposed to freezing. See winterizing in Georgia.
- Check it when planting changes. A drip layout designed for one planting scheme waters the wrong places once the bed is redesigned.
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Services that fix this
Drip Irrigation Repair
Bed and landscape drip — clogged emitters, cut tubing, failed filters and the pressure problems behind both.
Read more →Irrigation Maintenance
Spring startup, seasonal adjustment and winterization — the work that stops repairs from happening.
Read more →Irrigation System Inspection
Every zone run, every head watched, every fault written down — before it becomes an expensive repair.
Read more →Where we work
Irrigation Medics repairs irrigation systems across Hall County and the Lake Lanier communities, the Gwinnett corridor through Duluth, Suwanee and Buford, and North Fulton and Forsyth — Johns Creek, Alpharetta, Milton, Roswell and Cumming. Same rates throughout. See the service area.