SWI Excavating

Septic Company in Englewood, Colorado

(303) 922-82833070 S Vallejo St, Ste B, Englewood, CO 80110View on Yelp
SWI Excavating - septic in Englewood, CO

About SWI Excavating

SWI Excavating is based in Englewood, Colorado, a close-in suburb just south of Denver with a mix of older residential neighborhoods and active redevelopment projects. The company combines demolition, septic, and excavation services, which makes them a strong fit for properties undergoing significant changes, whether that's tearing down an old structure, replacing an aging septic system, or preparing a site for new construction. Englewood's proximity to Denver means they're operating in a market where speed and site organization really matter.

Services

Demolition Services
Septic Services
Excavation Services

Services & Process

Demolition services cover the removal of existing structures, old concrete, and outdated underground systems, including failed septic tanks that need to be properly decommissioned before new work begins. Excavation work supports everything from new septic installations to utility trenching and grading for construction projects. Septic services include tank pumping, system inspections, drain field repair, and full system replacements, often as part of a broader site redevelopment project rather than standalone maintenance calls.

Service Area

SWI Excavating serves Englewood and the surrounding south Denver metro area, including Littleton, Sheridan, and Cherry Hills Village. They're accessible throughout the US-285 and Santa Fe Drive corridors, covering both residential neighborhoods and commercial districts across the area.

Frequently Asked Questions

What does it cost to decommission an old septic tank?
Costs vary depending on the tank's size, age, and whether it needs to be pumped out, crushed in place, or fully excavated and removed. In the Englewood area, you'll also need to check local regulations since some municipalities require specific decommissioning methods. Getting a site assessment before pricing is the most reliable way to get an accurate number.
Can I build over an old septic tank if it's been decommissioned?
Generally no, at least not without specific engineering approval. Old tanks can settle or collapse over time, creating unsafe ground conditions for structures above. Most building departments require documentation of proper decommissioning before issuing permits for new construction on a site with a previous septic system.
Do I need a permit to replace a failing septic system in Englewood?
Yes, septic system replacements require permits in Colorado, typically through your county health department. The permit process involves a site evaluation and system design review before any work can begin. Working with a contractor that's familiar with local requirements speeds up the permitting process considerably.
How do I know if my septic system needs to be replaced versus repaired?
A failing drain field is often the deciding factor, since drain field repairs can sometimes extend a system's life but a fully saturated or collapsed field usually means replacement. Tank condition matters too, since a cracked or structurally compromised tank is generally a replacement rather than a repair situation. An inspection gives you the information you need to make that call.
What's involved in excavating for a new septic system?
The crew will dig out the area for the tank and the drain field trenches based on the approved system design and soil test results. In areas with clay-heavy or compacted soil like parts of the Denver metro, additional soil prep or drain field modifications may be needed. Proper backfill and compaction after installation is just as important as the digging itself.
Can demolition work disturb an existing septic system nearby?
It can if the demolition crew isn't careful about the location of underground components. Heavy equipment vibration can crack older tank walls or shift drain field pipes. That's why having a company that handles both demolition and septic services is an advantage: they can plan the demo around the existing system or coordinate its removal as part of the same project.

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