Main Line & Drain Replacement in Nampa, Boise, Meridian, Caldwell and the Treasure Valley
The main irrigation line runs from your water source to the valve manifold. Everything in your sprinkler system depends on it. When it goes, every zone goes with it. No pressure, no water, nothing works until the line gets fixed. This is one of the more common calls we get from homeowners in Nampa, Boise and Caldwell where systems installed 15 to 20 years ago are starting to fail.
Main line work is not something every sprinkler company handles. It takes trenching, correct pipe sizing, solid manifold connections and a pressure test before the trench gets closed. We have done it across all eight Treasure Valley cities and we do it right the first time. If you are searching for irrigation main line repair or main line replacement near me anywhere in the Treasure Valley, call us.
Signs Your Irrigation Main Line Is Failing
- Low or zero pressure across every zone at the same time
- A wet or soggy spot in the yard that keeps coming back between watering cycles and is not near any heads or valve boxes
- Water meter moving when all zones are off and nothing is running
- System ran fine for years and then suddenly dropped pressure across the board
- Same section of line has been patched more than once
How We Do Main Line Replacement
We find the failure point first through pressure testing or by reading the wet area. On older systems we replace the full line run rather than patching one spot. A 20 year old line that failed in one place is usually close to failing in two or three others. We trench the new line, size the pipe right for your zone count and flow, connect it cleanly to the manifold, pressure test it before the trench gets closed and restore the surface as well as the job allows.
New Main Line Installation for New Construction
We install new main lines and drain systems on new builds across Nampa, Meridian, Caldwell, Star and Kuna. Getting the sizing and routing right from the start matters. An undersized main line chokes flow to every zone and causes pressure problems that no amount of head adjustment or controller tweaking will fix.
Main Line Replacement Near Me — Treasure Valley Idaho
We do main line and drain replacement 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. We 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.