Main Line & Drain Replacement — Nampa, Boise, Meridian, Caldwell and the Treasure Valley
The main irrigation line is the supply line that runs from your water source to the valve manifold. It is the backbone of your entire sprinkler system. When it fails, every zone goes down simultaneously. You lose pressure across the board, or water stops flowing altogether. Main line failures are more common than most homeowners realize, especially on properties in Nampa, Boise and Caldwell where the original irrigation was installed 15 to 25 years ago using materials that have now reached the end of their service life.
Most irrigation companies are not set up for main line work. It requires trenching, correct pipe sizing, clean manifold connections and pressure testing before the trench gets backfilled. Beeline has done this work across all eight Treasure Valley cities and we do it right. If you are searching for main line replacement near me or irrigation main line repair in Nampa, Meridian, Boise, Caldwell or anywhere else in the Treasure Valley, you found the right company.
Signs Your Irrigation Main Line Needs Replacement
- Low or no water pressure across all zones at the same time
- A consistently wet or soggy area in the yard that does not correspond to a sprinkler head or valve box
- Water meter showing flow when all zones are off and no irrigation is running
- System worked fine for years and suddenly lost pressure across every zone at once
- Multiple failed patch attempts on the same stretch of line
How We Handle Main Line Replacement
We start by locating the failure point through pressure testing or by tracing the wet area. In most cases on older systems we replace the full main line run rather than patching. A line that has failed in one spot on a 20 year old install is usually close to failing in other spots too. We trench the replacement line, size the pipe correctly for your system's zone count and flow requirements, connect cleanly to the valve manifold, pressure test the new line before backfilling and restore the surface as close to original condition as the job allows.
New Main Line Installation for New Construction
We also install new main lines and drain systems on new construction properties across Nampa, Meridian, Caldwell, Star and Kuna. Getting the main line sized and routed correctly from day one matters. An undersized main line restricts flow to every zone and creates chronic pressure problems that do not go away no matter how much you adjust the heads or the controller.
Main Line Replacement Near Me — Treasure Valley, Idaho
Beeline does main line and drain replacement work across all eight Treasure Valley cities. Nampa, Boise, Meridian, Caldwell, Eagle, Kuna, Star and Middleton. If you need irrigation main line repair or replacement anywhere in the Treasure Valley call (208) 880-2712 or fill out the form below for a free quote. We assess the situation and give you a straight number before any work starts.
🔩 Full Line Replacement
We replace the full main line run using Schedule 40 PVC sized correctly for your zone count and flow requirements. Not a patch job on a 20 year old line.
📍 Leak Location
We locate the failure through pressure testing and zone isolation before we dig so we know exactly what we are dealing with before work starts.
🔧 Manifold Connection
Clean manifold connections with correct fittings for your Rain Bird valve setup. No shortcuts that turn into a callback six months later.
✅ Pressure Testing
We pressure test the new line before backfilling to confirm the work is solid. The trench does not get closed until we know the line holds.
