Compare 20 trusted, locally-vetted septic companies serving Longmont and the surrounding Boulder County area. From routine pumping to full system installs: view services, credentials, and contact details, then request free quotes.
Additional local contractors in the area, shown for broader local coverage.
Showing 20 of 20 listings in Longmont
Wellington, CO · Larimer County
Commercial, rural, and agricultural septic installation, repair, and maintenance serving Adams and Boulder County areas.
Fort Collins, CO · Larimer County
Septic cleaning, septic inspections, repairs, replacements, and septic work across Adams, Weld, and Boulder areas.
Loveland, CO · Larimer County
Septic replacement, repair, pumping, inspections, sewer/water services, excavation, and permitting support across Northern Colorado.
Loveland, CO · Larimer County
Septic installation, septic repair, drain field repair/replacement, septic pumping, and pump/alarm maintenance in Larimer County.
Loveland, CO · Larimer County
Plumbing/heating contractor listed as an OWTS installer in nearby Weld County; possible Larimer-area septic installation provider.
Berthoud, CO · Weld County
Licensed Broomfield septic installer/contractor for septic and excavation work.
Greeley, CO · Weld County
Excavation and septic installer listed for Conejos County by regional septic engineering resource.
Johnstown, CO · Weld County
Excavation contractor listed as an OWTS installer in nearby Weld County; possible Larimer-area septic installation provider.
Severance, CO · Weld County
Licensed Weld County OWTS installer for septic installation and excavation-related system work.
Berthoud, CO · Boulder County
Septic pumping, inspections, installation, repair, sewer line inspection/jetting, and commercial water/sewer services.
Erie, CO · Adams County
Septic system services, excavation, installation, and related septic work across Adams, Boulder, Broomfield, Weld, and Larimer counties.
Longmont, CO · Boulder County
Licensed Broomfield septic cleaner and contractor listed for septic work.
Denver, CO · Denver County
OWTS design, engineering reports, site evaluation, and septic design documentation for Summit County projects.
Nederland, CO · Gilpin County
Licensed Boulder County septic cleaner.
Black Hawk, CO · Gilpin County
Licensed Clear Creek County OWTS contractor for septic installation, construction, alteration, and repair.
Boulder, CO · Boulder County
Septic pumping, inspections, troubleshooting, tank locating, line cleaning/thawing, lift pump repair, and minor septic repairs serving Gilpin County.
Nederland, CO · Boulder County
Septic pumping, inspection, cleaning, and service provider based near Gilpin County mountain communities.
Nederland, CO · Boulder County
Septic installation, septic engineering support, inspection/troubleshooting, excavation, and drainage work serving Gilpin County.
Monument, CO · El Paso County
Septic system installation, replacement, maintenance, repair, and wastewater engineering services for Grand County properties.
Longmont, CO · Boulder County
Septic cleaning, pumping, maintenance, inspections, repairs, installation, grease trap, drain, and sewer services.
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Call directly or send an inquiry. Most contractors here offer free written estimates.
In the Longmont area, a standard residential septic pump-out typically runs between $300 and $600, depending on tank size, accessibility, and how long it's been since the last service. Most contractors here offer free written estimates, so it's worth requesting quotes from two or three before you book.
Most households should pump their septic tank every 3–5 years, though the exact interval depends on tank size and the number of people in the home. Larger families or smaller tanks may need service every 2–3 years. A local inspection can give you a precise schedule.
Slow drains, gurgling pipes, sewage odors, unusually lush or soggy patches over the drain field, and backups are all warning signs. If you notice any of these, contact a licensed contractor promptly. Catching problems early is far cheaper than a full system replacement.
Yes. Licensing means the contractor meets Colorado state requirements for onsite wastewater work, and insurance protects you if something goes wrong on your property. Every listing on this page indicates license and insurance status so you can choose with confidence.
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