Read the failure before anyone bills a truck roll
Most irrigation failures identify themselves from symptoms alone. Open the line that matches, and know what you're asking to have fixed.
AOne zone is dead, the rest run fine
BPressure dropped everywhere, or heads barely pop
CThe controller misbehaves — wrong times, double runs, resets
DThe bill jumped but everything looks normal
Sprinkler-system repair is licensed work in New Mexico — MS-6 covers altering, repairing and maintaining potable-water systems, backflow devices included (14.6.6 NMAC). Drip tweaks on your own lines are yours to make freely.
Why this repair gets urgent here
A failed zone in this climate isn't cosmetic: in July, established plants can start dying back within days, and a mainline leak meters water around the clock. That urgency is exactly why it pays to arrive at the phone call already knowing which of the four patterns you have — urgent buyers who can't describe the failure get quoted for the widest possible version of it.
The licence part, plainly
Work on a sprinkler system — altering, repairing, maintaining, backflow devices included — is classification MS-6 in New Mexico (14.6.6 NMAC). That's not bureaucratic trivia: the backflow assembly is the piece that keeps irrigation water out of your drinking lines, and it's the reason this trade is licensed at all. Ask for the number, check it in the public licence register, and be suspicious of any “we don't need one for this” on system work. Adjusting your own drip emitters, by contrast, is nobody's business but yours.
Repair, or retire the zone?
The repair visit is also the moment to ask a better question: does this zone still deserve water? A spray zone soaking a strip of gravel, or lawn nobody walks, can often be capped or converted to drip for less than another season of repairs — and the water authority's conversion guidance is built for exactly that call.