Longmont Leak Detection Specialists
Find the source of hidden water loss before it spreads through your Longmont property or drives up repair costs. Subsurface Leak Detection of Colorado provides professional leak detection for plumbing leaks, slab leaks, underground water lines, irrigation systems, sewer problems, and commercial properties. Using precise, non-invasive diagnostics, we help limit disruption, eliminate guesswork, and give you the information needed to plan the right repair.
Confirm Which Utility Serves the Longmont Address
The City of Longmont provides water and sewer service within its service territory, but nearby Longmont-area properties may be served by Left Hand Water District, Longs Peak Water District, or St. Vrain Sanitation District. Water and sewer service boundaries do not always match the mailing city, so check the bill before relying on City-specific instructions.
Longmont states that property owners maintain the private water service from the property line to the foundation, and the private sewer service from the building to the public main. Water in the street or a suspected main break should be reported to the appropriate utility. Longmont’s current provider and responsibility guidance is available on the City’s Water and Utilities page.
Private Leak Detection for Longmont Properties
Residential Leak Detection
A continuous-use flag can come from a fixture, irrigation, a concealed building branch, or the private service line. We use meter behavior and available shutoffs to isolate the system first, then select acoustic listening, pressure testing, thermal imaging, moisture measurement, tracer gas, or line tracing according to the remaining evidence.
Commercial Leak Detection
Longmont commercial, industrial, multifamily, and HOA properties may combine multiple meters, private mains, irrigation, process use, and shared branches. A system layout and time-based use history help separate normal demand from the network that requires focused testing.
Plumbing Smoke Testing
A private sewer service, vent opening, failed seal, or concealed drain connection can create odor without a visible water leak. Plumbing smoke testing and camera inspection may be used to trace the pathway and document accessible system conditions.
Use Longmont Meter Data as a Starting Clue
Longmont’s 2025 Water Efficiency Plan reports that most customers have advanced meter-reading technology, and the customer portal can support more detailed use review and leak notifications. That data can show when continuous or abnormal use occurs, but it does not identify the exact pipe or location.
The City also recognizes Eastside and Westside historic districts alongside newer residential, commercial, and industrial development. Those property contexts can differ in meter access, branch layout, irrigation, and shared systems; they do not justify assumptions about a specific pipe material or failure.
Longmont and St. Vrain Valley Service Areas
Longmont
Niwot
Lyons
Berthoud
Mead
Firestone
Frederick
Erie
Hygiene
Gunbarrel
Clover Basin
Prospect New Town
We provide leak detection across Longmont and the St. Vrain Valley, from established city neighborhoods and mixed-use properties to rural-edge lots and nearby communities. Testing is adapted to the serving utility, service-line route, building age, irrigation layout, and the specific evidence of water loss.
Schedule Longmont Leak Detection in the St. Vrain Valley
Tell us the address, serving utility, meter or billing pattern, shutoff results, and where moisture or pressure changes appear. We will use those clues to plan focused testing for private plumbing, service lines, irrigation, or sewer systems.
Frequently Asked Questions
Which utility serves my Longmont-area property?
Check the utility bill and confirm the address with the provider. Some Longmont-area properties use Left Hand Water District, Longs Peak Water District, or St. Vrain Sanitation District rather than the City system.
What does a Longmont continuous-use or leak alert mean?
It means the meter data shows sustained or unusual use. The alert can identify when water is moving, but it cannot identify the fixture, irrigation valve, private service line, or exact leak location.
Who owns the water service line between the street and my building?
Longmont states that the property owner maintains the private water service from the property line to the foundation. Confirm the exact boundary and meter arrangement with the serving utility.
Who should I call for water running in the street or a suspected sewer-main problem?
Report water in the street or a suspected public main break to the serving utility. Longmont can also help determine whether a sewer backup involves the public main; private service-line issues remain the property owner’s responsibility.
