7 verified septic companies across 1 cities in Denver County. Compare ratings, services, and request free quotes from local providers.
Denver County, Colorado sits at the eastern edge of the Rocky Mountain Front Range, where the high-altitude climate and semi-arid soils create a distinct environment for residential and commercial septic systems. This directory lists 7 verified septic service providers operating across 1 city in the county, giving property owners a straightforward way to find qualified help. While Denver is predominantly served by the Denver Metro Wastewater Reclamation District for municipal sewer, pockets of older or rural-adjacent properties — particularly in outlying areas near the county line — still rely on on-site septic systems. The area's clay-heavy soils and freeze-thaw cycles during Colorado winters can affect drain field performance and system longevity, making routine maintenance especially important. Whether you need a routine pump-out, a pre-sale inspection, or a system repair, the companies listed here serve Denver County residents directly.
Denver, CO
⭐ 4.9 (549 reviews)
Hyper Flow Service is a plumbing and sewer company serving the Denver metropolitan area in Colorado. The company provides comprehensive sewer and drain services including drain cleaning, sewer cleaning, trenchless sewer repair, and hydro jetting. Their plumbing services encompass water heater installation and repair (including tankless models), leak detection and repair, slab leak services, piping and repiping, gas line plumbing, water line services, sump pump installation, and toilet and shower
Denver, CO
⭐ 4.8 (220 reviews)
Denver, CO
⭐ 4.7 (2198 reviews)
Denver, CO
⭐ 4.6 (778 reviews)
Time Plumbing, Heating & Electric Inc. is a full-service home systems contractor serving Denver, Colorado, offering a comprehensive range of plumbing, heating, cooling, drain, sewer, and electrical services. Their plumbing solutions include bathroom and kitchen repairs, water leak detection, water heater installation and repair, and winterization services. For drain and sewer needs, the company provides drain cleaning, hydrojetting, camera inspections, sewer line repair, and trenchless sewer replacement. HVAC services cover furnace repair and replacement, boiler services, central air conditioning repair and installation, ductless mini splits, and evaporative cooler service. Electrical offerings include breaker panel services, ceiling fan installation, generator services, and landscape lighting. Time Plumbing emphasizes flat-rate competitive pricing with no hidden fees, same-trip problem resolution, and a commitment to 100 percent customer satisfaction before considering any job complete. Fast, local service from knowledgeable technicians makes them a go-to resource for Denver homeowners. Residents can reach their team at 303-758-6237 to schedule an appointment or request prompt assistance.
Denver, CO
⭐ 5.0 (5 reviews)
CWS Excavating is a Lakewood, Colorado-based excavation and septic company serving residential and commercial clients across multiple counties in the region. The company specializes in septic system installation, ranging from simple pump-and-haul setups to complex high-level treatment systems, including subsurface drip irrigation systems featuring Orenco AX100 treatment units. In addition to septic services, CWS Excavating handles site utilities, foundation excavation, driveway grading, and commercial wastewater system installation. Licensed in numerous counties throughout the area, the team takes pride in delivering high-quality workmanship on projects of all sizes, from small residential jobs to large-scale commercial builds. CWS Excavating offers free estimates and can be reached by phone during regular business hours, Monday through Friday. Homeowners, contractors, and commercial clients looking for a dependable excavation and septic contractor in the greater Denver metro area are encouraged to contact Matthew or Shema Morgan directly to discuss project needs and scheduling.
Denver, CO
⭐ 4.8 (16 reviews)
Denver Sewer and Water is a licensed, insured, second-generation underground plumbing specialist serving the Denver metro area, including Denver Tech Center, Aurora, Lakewood, Littleton, Westminster, and Castle Rock. The company focuses exclusively on underground line work, offering sewer line repair, replacement, and trenchless installation, along with sewer scope and video inspection, line locating, hydro jetting, and excavation services. Water line installation, repair, leak detection, and locating are also available for both residential and commercial properties. Additional services include emergency drain cleaning, drain camera inspections, storm drain repair and cleanout, fire line services, and septic system repair and replacement. Denver Sewer and Water takes a diagnosis-first approach, using camera inspection and line locating technology to identify the root cause of a problem before recommending a repair path. The team can be reached by phone at (720) 935-6221, and free quotes are available through their website. Their office is located at 10860 Dover St., Suite 2300, Westminster, CO 80021.
Denver, CO
⭐ 4.7 (480 reviews)
King Rooter & Plumbing is a Denver, Colorado-based plumbing service provider specializing in comprehensive drain cleaning, sewer and water line solutions, and tankless water heater repair. With a strong reputation in the local community, the company has earned a 4.7 Google rating from 479 customer reviews, reflecting its commitment to quality workmanship and customer satisfaction. King Rooter & Plumbing serves residential and commercial clients throughout the Denver area, offering professional expertise in septic-related services and general plumbing maintenance. The company's experienced team is dedicated to addressing various plumbing needs with reliable and efficient solutions.
Denver County's septic landscape is shaped by its largely urban character, though a subset of properties — often older homes built before municipal sewer extensions reached their neighborhoods — continue to operate on private septic systems. Many of these systems date back several decades and may use conventional gravity-fed designs with a septic tank and leach field. Colorado's semi-arid climate means soils can be slow to absorb effluent during wet spring months when the ground is saturated from snowmelt, and surface frost during winter can complicate access for service trucks. Some properties in transitional zones near the county boundary may use pump-assisted or pressure-distribution systems where soil conditions or lot topography make gravity systems impractical. Homeowners with aging systems should be attentive to signs of wear, particularly as original components approach or exceed their typical service lifespan.
In Colorado, on-site wastewater treatment systems — the state's preferred term for septic systems — are regulated at the county level under authority granted by the Colorado Department of Public Health and Environment. In Denver County, property owners seeking to install, repair, or significantly modify a septic system are generally required to obtain a permit through the local environmental health agency before work begins. Colorado also requires an inspection or disclosure of on-site wastewater system condition in many real estate transactions, though specific requirements can vary. Homeowners can research applicable rules through Denver Environmental Health or the Colorado Department of Public Health and Environment's Water Quality Control Division, which publishes statewide guidance on system standards. Licensed contractors are typically required to perform permitted work. Always verify current requirements with your local health department.
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