TREPIC LOCATING
Before you break ground.
Know what's below.
We find the private lines 811 doesn't. Underground utility locating for homeowners and contractors across the Phoenix Valley.
First two hours included · No Valley travel fee
THE PART OF YOUR YARD YOU DON'T SEE.AN INTERACTIVE 2D PROPERTY MAP
811 contacts participating utilities to mark the lines they own. Follow the dashed routes from the street to each service handoff.
WHO MARKS WHAT?811 marks the utility’s lines.
811 marks the utility’s lines.
TREPIC locates the lines you own.
The difference is who owns the line, not whether it is in your yard.
FOLLOW ONE WATER LINE FROM THE STREET
Street mainUtility-owned
811 MARKSUtility’s service line
Water meterOwnership changes here*
TREPIC LOCATESYour private lines
Your houseCustomer-owned connection
Dashed = 811 marks it. Lines owned by participating utilities, up to their ownership handoff.
Solid = TREPIC locates it. Detectable customer-owned lines beyond that handoff. 811 does not mark these.
*A typical water example. Handoff points vary by utility. Private power to a casita or EV charger and gas to a BBQ or pool heater also need a private locate.
Ownership matters, not the property line. This is an example; utility ownership and line detectability vary.
Certified techniciansPublished pricingThe whole Phoenix ValleyTREPIC Networks · Arizona since 2015
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811 marks utility-owned lines. We locate yours.
Call Arizona 811 first. Participating utilities mark the facilities they own, including service lines that may enter your property. Their responsibility ends at the ownership handoff, often a meter or service connection. Customer-owned lines beyond that point need a private locate. Think water from your meter to the house, gas to a BBQ or pool heater, and private power or data to a casita. That is where TREPIC comes in.
811 marks utility-owned lines. Customer-owned connections need a separate locate.
Call 811 first, then book us. You need both.TREPIC LOCATING / 03
Lines we locate
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What are you building?
Tap your project to see which lines are usually in the way.
PLAN BEFORE YOU DIG
Choose a project to explore the lines below it.
White dashed outline: proposed work area.
Bright solid lines: private connections for your project.
Colored dashed lines: utility-owned connections.
Circles: example ownership handoffs. The same property is shown above.
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How it works
- 01
File your 811 ticket and book TREPIC at the same time.
- 02
Mark your dig area with white paint or flags.
- 03
Our technician sweeps the area, marks every line we find in standard utility colors, and walks you through it.
- 04
You get a photo summary of the marks for your records.
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What you get with every locate
A walkthrough of every mark with you or your foreman
A photo summary sent the same day
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One clear price.
STANDARD PRIVATE UTILITY LOCATE
$250 / first two hours
- Includes the first two hours on site
- After two hours, $125 per additional hour or part of an hour
- We always ask before going over
- No travel fee anywhere in the Valley
$250
The first two hours are included. Additional time is billed in full-hour increments.
| 1 hr | $250 |
| 2 hr | $250 |
| 2 hr 10 min | $375 |
| 3 hr | $375 |
| 3 hr 10 min | $500 |
| 4 hr | $500 |
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Honest about what's possible
We use professional electromagnetic locating equipment. It finds metal lines, lines carrying power or signal, and plastic lines that have tracer wire. Plastic pipe without tracer wire, which is common on older plastic lines, may not be detectable. Very deep lines and heavy caliche can also limit any locator. If we can't confirm a line, we'll tell you on site. Marks are approximate, so always hand dig within 24 inches of any mark.
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We cover the whole Valley.
Maricopa and Pinal counties. Private locating wherever you dig.
Don't see your city? If you're in the Valley, book anyway.
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Book your locate
Choose a preferred day and arrival time. A TREPIC team member will call to confirm your appointment and collect payment information. No online payment.
You can also request a locate by phone. Call (480) 573-0889 or request a callback.
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A little more clarity.
Do I still need to call 811?
Yes. Arizona law requires it and it's free. Call 811 or file online at least two full working days before you dig, and book us at the same time. 811 covers the utility owned lines. We cover the private ones.
What does 811 not mark?
Anything past the utility's meter: water and sewer lines to the house, gas to grills and heaters, power to outbuildings, landscape and gate lighting, and private cable between buildings.
How much does it cost?
$250 includes the first two hours. After that, each additional hour or part of an hour adds $125, only with your OK. For example, 2 hours 10 minutes costs $375, 3 hours costs $375, and 3 hours 10 minutes costs $500. No travel fee anywhere in the Valley.
How soon can you come out?
Usually within one to two business days. Choose a preferred date and time on the calendar. Our team will call to confirm availability.
Do I need to be home?
Not required if we can reach the dig area. Leave gate codes and pet notes in the booking.
Can you find plastic pipe?
If it has tracer wire, yes. Plastic without tracer wire may not be detectable with our equipment, and we'll tell you on site if we can't confirm a line.
It's just a few fence posts. Do I really need a locate?
A post hole can hit a gas or electric line as easily as a pool dig can. One locate costs far less than one broken line.
Do you dig or pothole?
No. We locate and mark. We don't excavate.
Do you work with contractors?
Yes. Pool, fence, landscape and solar crews can request a callback below for recurring scheduling.
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Contractor or recurring work?
Tell us about your crews and we'll set up scheduling that fits. We call back within one business day.