Louisville homes are on the city water system, so a hidden leak usually shows up as more usage on the utility bill, a meter that moves with the house quiet, or moisture with no clear source. A plumber can confirm the leak and track it to a wall, slab, fixture or yard line. Call the number on this page to be connected with a local plumber in Louisville.

What happens when you call
You will be connected with an independent plumber who covers Louisville. Be ready to say how long usage has been up, whether you have watched the meter with everything off and where you have seen damp spots. If your home was rebuilt after the Marshall Fire, mention it; the plumber will know the plumbing is newer and focus on fittings and connections.
The visit typically begins with a meter check, then valves are closed to test each part of the house separately. When a branch loses pressure, acoustic tools, moisture meters or thermal imaging narrow the location so the repair opening stays small.
What moves the price
- Time spent isolating the branch that is leaking
- Whether the source is in a wall, a ceiling, a slab or the yard line
- Access in older homes near downtown versus newer construction
- The repair itself and whether it needs a city permit and inspection
Local conditions in Louisville
Louisville is a former coal-mining town in southeastern Boulder County that has become a suburban residential community with a historic Main Street downtown. Hundreds of homes were rebuilt after the December 2021 Marshall Fire, so the housing ranges from older downtown houses to brand new construction. Older homes tend to leak at original valves and fittings; new ones more often at PEX connections, supply hoses and water heater lines.
The City of Louisville runs its own water system with two treatment plants and disinfects with chlorine. Few homes in the city are on private wells. The city keeps an inventory of water service lines to confirm no customers are served by lead lines, and asks owners whose line material is unknown to report it. If water is coming up near the meter or in the street, call Public Works at (303) 335-4608, or the Operations Division on-call line at (303) 489-2301 after 3:30 PM.
The City of Louisville Building Safety Division issues building permits and performs plumbing inspections, so a repair that replaces pipe would go through that office.
Short checklist before the visit
- Record a meter reading, then recheck after an hour of no water use
- Switch off the irrigation controller
- Locate the main shutoff and confirm it works
- Note any sounds, stains or wet spots and when they appeared
Leak Detection questions in Louisville
Can a newer house still have a hidden leak?
Who do I call if water is coming up at the meter pit or the street?
What should I do if I smell gas rather than see water?
Should I shut off the water while I wait for the plumber?
More plumbing services in Louisville
Leak Detection nearby
Helpful guides
Sources
Last updated: