● Serving Castle Rock, CO | Same-Day Appointments When Open
Underground and Main Line Leak Detection in Castle Rock, CO
Water is escaping somewhere between your meter and your house, and you can’t see where. We trace the line, mark the break and show you the proof, so the dig, if there is one, is small and in the right place.
The Basics
What is an underground water line leak?
An underground leak is a break or failed joint in the buried line that carries water from the meter to your house, or in another buried line such as the one feeding a sprinkler system. Because the water soaks into the soil, you often see nothing at the surface. The first clue is usually the meter, the bill or the water pressure.
Signs of a leak in the main water line
A water meter that keeps moving with every fixture in the house off
A bill that rises with no change in how you use water
A wet, soft or sunken patch in the yard, driveway or along the foundation
Grass that is greener or grows faster in one strip
Low water pressure throughout the house
The sound of running water outside or at the meter
Water pooling near the meter or the street side of the house
⏱ Confirm It
Confirm it: the meter test
1
Turn off every fixture, the dishwasher, the washer and the ice maker.
2
Find your water meter. If it sits in a pit with a metal lid, do not leave the lid open in cold weather, because it lets warm air out and can freeze pipes.
3
Look at the low-flow indicator. If it spins while everything is off, water is going somewhere.
4
Close the main valve in the house and check again.
That last step tells you which kind of leak you have before we arrive.
If the meter stops
The leak is inside the house.
If it keeps moving
The leak is on the buried line between the meter and the house.
Our Methods
How we find an underground leak
We do not start by digging. We narrow the location first, then confirm.
01
Meter and pressure check
Confirms water is leaking and helps separate a house leak from a buried-line leak.
02
Pressure testing
We isolate the line and see whether it holds pressure.
03
Line tracing
We locate the path of the buried pipe so we know exactly where it runs.
04
Acoustic listening
Ground microphones pick up the sound of water escaping a pressurized line.
05
Confirmation
A second method on the same spot before we mark it.
We mark the location on the surface and show you photos, so whoever repairs it digs one small hole instead of trenching the yard.
Castle Rock Homes
Why buried lines fail in Castle Rock
Most Castle Rock homes are newer, with a median build year of 2007, so the usual causes are not decades of rust. Expect these instead:
2007
Median build year of a Castle Rock home
Ground movement.
Parts of Douglas County sit on expansive clay that swells when wet and shrinks when dry, and that movement can stress a line, especially near the foundation.
High pressure.
Pressure above 75 psi strains pipes and joints. Most pressure changes come from your own PRV or backflow device.
Freeze and thaw.
Cold snaps stress shallow and exposed sections.
Fittings and joints.
A poorly seated fitting can start weeping and get worse over seasons.
Damage from digging and landscaping.
A nicked line from fence, deck or sprinkler work can leak long after the job is done.
Your Water Bill
What it does to your water bill
A buried leak runs day and night, and you never see it. Castle Rock Water bills in tiers: Tier 1 is your indoor use, Tier 3 is everything above your budget at a higher rate per 1,000 gallons, and use over 40,000 gallons in a month carries a surcharge. A steady underground leak can push you into the higher tiers fast. Castle Rock has also proposed a 5% water rate increase for 2027, so every extra week costs more.
Tier 1
Your indoor use
Tier 3
Everything above your budget
At a higher rate per 1,000 gallons.
40,000+
Gallons in a month
Carries a surcharge.
How It Works
What happens when you call RidgeLeak
01
Tell us what you're seeing.
Meter behavior, wet spots, pressure changes, the age of the house.
02
We book the visit.
Same-day when we have an opening.
03
We check the meter and the pressure.
We decide whether the leak is inside the house or on the buried line.
04
We trace and locate.
We follow the line and mark the exact spot.
05
You get the report.
Photos, the marked location and your repair options in plain words.
06
You decide.
Have us repair or replace the line, hire your own plumber or send the report to your insurer.
After We Find It
Repair or replace the line?
Once the leak is found, there are usually two paths: repair the damaged section or replace more of the line. If the line is old, has failed more than once or is leaking in more than one place, replacement can make more sense than another patch. We lay out both options before any work moves forward.
Repair the damaged section
Replace more of the line
- The line is old
- It has failed more than once
- It is leaking in more than one place
Your Leak Report
What you get after the visit
A written report with photos and the leak location marked
The cause in plain language, and what happens if it is left alone
Repair options with a price for each
Documentation for your insurance company, and a record you can show Castle Rock Water if you ask about a bill adjustment
Affordable, with the price upfront
We keep leak detection affordable and quote the price before the visit. The final cost depends on how deep and how long the line is and how many methods it takes to confirm the spot. Finding the exact location first is also what keeps the repair small.
Service Area
Serving Castle Rock and nearby areas
We provide underground and main line leak detection throughout Castle Rock, including The Meadows, Founders Village, Crystal Valley Ranch and Terrain, and in Castle Pines. ZIP codes 80104, 80108 and 80109.
Meter running with everything off?
We trace the line, mark the break and show you the proof.
FAQ
Frequently asked questions about underground leak detection in Castle Rock
How do I know if my main water line is leaking?
Watch the meter with every fixture off. If it keeps moving, water is leaking. Then close the main valve in the house. If the meter still moves, the leak is on the buried line between the meter and the house. A wet or sunken patch in the yard and low pressure point the same way.
Can you find an underground leak without digging up the yard?
Yes. We trace the line and use acoustic listening and pressure testing to pinpoint the break, then mark the spot. Digging only happens at the marked location, and only if you decide to repair it.
How long does it take to find a buried leak?
Most visits take a few hours, depending on the length of the line and how many methods it takes to confirm the spot. We tell you what to expect when you book.
What should I do if I think the main line is leaking?
Close the main valve at the house. If water is pooling or flooding, close the valve near the meter too, being careful not to open a meter pit lid in cold weather. Then call us. Keep the written record of what you saw.
Is the underground water line my responsibility?
In general, the utility looks after the main and the meter, and the line from the meter to your house is the homeowner’s. Confirm where your responsibility starts and ends with Castle Rock Water.
Will Castle Rock Water adjust my bill if I had a leak?
You may qualify for a leak adjustment. Check your bill’s eligibility with Castle Rock Water. Keep a written record of the leak and the repair, and ask what documents they want, since we cannot promise a credit.
Does homeowners insurance cover an underground leak?
Policies differ. Many cover sudden water damage but not always the cost of finding the leak or repairing the pipe itself. Check your policy or ask your insurer, and keep our report with photos for the claim.
Do you offer same-day service in Castle Rock?
Same-day when we have an opening. Call us and we tell you how to limit the damage while you wait.
Keep Exploring
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Hidden Water Leak Detection
Main Water Line Repair and Replacement
Irrigation and Sprinkler Leak Detection and Repair
Emergency Leak Detection and Repair
