Signs a Commercial Water Service Line Is Failing
Commercial water service line failures present with symptoms that a property manager or HOA board will notice before any visual evidence appears. These are the conditions that indicate the service line rather than an interior plumbing problem.
Pressure Drop Across Multiple Units
When pressure drops at a single fixture, the problem is typically inside that unit. When pressure drops simultaneously across multiple units or floors, the problem is upstream at the service line or meter. A service line leak reduces pressure throughout the system because the flow that should reach the building is losing volume between the main connection and the meter. A building-wide pressure drop is a service line issue until the camera and pressure test prove otherwise.
Commercial Water Line Services We Provide
Water Service Line Inspection and Pressure Diagnostics
Before recommending repair or replacement, we evaluate the service line condition and the source of any pressure or flow problem. Pressure testing identifies the magnitude of loss across the service line. Camera inspection documents the condition of accessible pipe sections and identifies corrosion, joint failures, or debris accumulation in older galvanized or copper lines.
On commercial properties where the service line age and material are unknown, camera inspection combined with a field material assessment gives the property a clear picture of what is in the ground before any decision about repair vs replacement is made.
Water Service Line Repair
Localized failures including pinhole leaks, joint separations, corrosion-through sections, and frost-damaged pipe sections are repairable without replacing the full service line. We locate the failure precisely using pressure testing and locating equipment, excavate to the failure point with minimal surface disruption, repair or replace the affected section, and pressure-test the repaired line before backfilling.
Where the failure is at the curb stop or meter pit, we coordinate with Denver Water or Aurora Water for access to their equipment before work begins. The water utility is responsible for the main and the connection at the property line. The property owner is responsible for the service line from the property line to the building.
Denver Water Responsibility: Who Owns What
Property managers and HOA boards frequently have questions about which part of the water service line they are responsible for and which part the utility maintains. The boundaries are consistent across Denver Water’s service area.
| Service Component | Denver Water Responsibility | Property Owner Responsibility |
| City water main | Denver Water owns, maintains, and repairs the city main under the street. | No responsibility. |
| Main tap and corporation stop | Denver Water owns and is responsible for the tap connection at the main and the corporation stop. | No responsibility. Contact Denver Water if the corporation stop needs service. |
| Service line from main to curb stop | Denver Water owns the main and the corporation stop at the tap point. The service line from that point forward is the property owner’s responsibility. | Property owner is responsible for this segment. The service line begins at the tap into the main. |
| Curb stop (shut-off valve at property line) | Denver Water will replace a broken stop box cover when reported. All other maintenance of the stop box and valve is the property owner’s responsibility. | Property owner is responsible for maintaining the stop box and valve. Denver Water technicians operate the valve to shut off service for repairs when needed. |
| Service line from curb stop to meter | Denver Water maintains this segment in some service areas; varies by property. | Property owner is responsible in most cases. Confirm with Denver Water for your specific property. |
| Meter pit and meter | Denver Water will maintain and repair the meter and AMR device when they fail due to normal wear and tear. | Property owner owns the meter, meter pit, and AMR device. Owner is responsible for protecting them from damage from traffic, freezing, and vandalism. |
| Service line from meter to building | No responsibility. | Entirely the property owner’s responsibility: repair, replacement, and all associated costs. |
Aurora Water uses the same general structure with minor variations in how responsibility at the curb stop segment is allocated. We confirm the responsibility boundary for any specific property before beginning work so the scope and cost allocation are clear before we start.
Water Line Conditions on Denver and Aurora Commercial Properties
Galvanized Steel in Pre-1980 Multi-Unit Buildings
Multi-unit residential buildings and commercial properties built before 1980 frequently have galvanized steel service lines and interior distribution piping. Galvanized steel corrodes from the inside out. Internal corrosion products accumulate on pipe walls, progressively reducing effective inside diameter and eventually producing pinhole leaks throughout the corroded section. Galvanized service lines in Aurora’s 1970s apartment stock are at the age where internal restriction is severe and leaks are appearing on a predictable schedule.
When camera inspection shows a galvanized service line with significant internal corrosion and reduced inside diameter, replacement is the more cost-effective path. Repeated spot repairs on corroded galvanized pipe address individual leaks while the corrosion continues across the full run.
Copper Corrosion in Denver’s Aggressive Soil Conditions
Denver’s soil conditions, particularly in areas with clay-heavy, alkaline soil and fluctuating moisture, are aggressive toward copper pipe buried at shallow depths. Copper service lines installed before 1980 can develop pinhole corrosion from the outside in, a failure mode called pitting corrosion that results from soil chemistry rather than internal water quality. Pinhole leaks from external pitting are not repairable by sectional replacement when the corrosion is distributed across the full line.
Frost Line Depth and Winter Failures on Shallow Lines
Denver’s frost line runs 36 to 42 inches. Water service lines installed at or near the minimum frost depth experience thermal stress during deep freeze events and are vulnerable to freeze damage when soil temperature drops below the installation depth. Shallow service lines on properties where soil cover has been reduced by grading or excavation near the line are at elevated risk during extended cold periods. Lines that have experienced freeze damage develop multiple failure points across the affected section.
Coordinating Water Line and Sewer Line Work in the Same Project
Water service lines and sewer laterals on the same property frequently run through the same corridor between the building and the street. When both systems need attention, coordinating the work into one project scope eliminates a significant source of cost and disruption.
A property that opens the ground for sewer line work and then calls a separate contractor for water line work two months later pays twice for excavation, surface restoration, and the disruption to parking or landscaping above the utility corridor. We assess both systems during the initial site evaluation and present a combined scope when both have work that is needed.
This coordination is particularly valuable on ADU projects and commercial renovations where both the sewer lateral and the water service require attention before new units can be connected. Contractors managing ADU builds see project timelines and costs both improve when one underground specialist handles both systems rather than two separate subs making two separate scheduling requests.
For more on how we coordinate underground utility work on contractor projects, see our contractors page.
Our Commercial Water Line Repair and Installation Process
Step 1: Pressure Assessment and Responsibility Boundary Confirmation
We assess current service pressure at the meter and at representative points inside the building to quantify the pressure loss and confirm that the service line, not an interior distribution problem, is the source. We also confirm the responsibility boundary for the specific property with Denver Water or Aurora Water before scoping any work.
Step 2: Written Repair and Replacement Options With Pricing
We present repair and replacement options with written pricing based on the assessed condition. For properties where the service line age and material make full replacement the better long-term investment, we explain the reasoning with the camera footage and pressure data rather than a verbal recommendation. The decision belongs to the property manager or owner.
Why Commercial Properties Choose Sewer Lines Only for Water Line Work
- One crew for sewer and water. When both systems need work, we coordinate the scope into one project. One excavation, one surface restoration, one permit process, one company accountable for the full scope.
- Denver Water process knowledge. We have extensive experience meeting Denver Water requirements along with licenses with more than 35 area municipalities and water districts. Permit requirements, responsibility boundaries, SDC calculations, and right-of-way permit timelines are part of every water service project we manage. We do not push these tasks back to the property manager.
- ADU and commercial upsizing experience. We assess whether existing service lines can support additional fixture loads before construction begins, not after a permit review flags the deficiency.
- Owned equipment, direct employee crews. No subcontracting on excavation or pipe work. One company from pressure test to final documentation.
- 5-year transferable warranty on all water line repairs and replacements.
- 927 Google reviews with a 4.9-star rating from property managers, HOA boards, contractors, and residential clients.
- Free estimates and free second opinions. Free written estimates on all water line work. Free second opinions on existing contractor quotes or utility recommendations.
Frequently Asked Questions
Schedule a Commercial Water Line Evaluation in Denver or Aurora
Sewer Lines Only assesses commercial water service lines, locates failures, presents written repair and replacement options, handles permit coordination with Denver Water or Aurora Water, and completes the work with our own crews from pressure test through final documentation.
Call 303-562-9800 for a free commercial water line evaluation or repair estimate. Free second opinions on existing contractor quotes or utility repair recommendations are available on request.
Use the contact form on this page for written project inquiries. We respond to all commercial water line requests within one business day.
