Cost of septic tank and installation — Denver, CO

Looking for cost of septic tank and installation in Denver, CO? Call SepticTank Experts for a contact a provider — no obligation. Licensed septic pros serve Denver and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

Need help right now? If you are dealing with sewage backup, slow drains, or a foul smell inside your home, you need help right away. Do not wait for the problem to get worse, as this can cause significant damage to your property. We are ready to handle urgent septic issues around the clock. When you call us, your request is routed to a local professional in seconds so we can get your system back in working order fast. (978) 759-4817

What affects the price

About this service

Determining the total cost for a septic system involves looking at both the hardware and the labor required to put it in the ground. Factors like site accessibility, permit fees, and the size of the tank significantly impact the bottom line. Because every property is different, costs typically fluctuate based on what the soil requires for proper drainage. A site visit helps narrow down these variables. Exact pricing confirmed free on the call.

Summer often means more houseguests and increased water usage, which puts extra demand on your septic tank. With more showers and laundry loads, it is easier for a tank to reach capacity. If you have guests coming over, consider a pump-out beforehand to avoid an inconvenient backup during your family gatherings.

Frequently asked in Denver

What is the purpose of a septic tank?

A septic tank is an underground wastewater treatment structure. It receives all the wastewater from your home, separating solids and liquids. The solids settle to the bottom as sludge, while the lighter materials float to the top as scum. This process helps to pre-treat the wastewater before it is further processed.

What is the average cost of a septic tank and installation?

The cost to install a septic tank in Denver can vary widely depending on system size, tank material, and site specifics. Factors like soil type and accessibility in neighborhoods like Cherry Creek or Stapleton will influence the price. For an accurate estimate reflecting your property's unique needs, it's best to get a personalized quote.

How long do septic tanks usually last?

With proper maintenance, septic tanks can last for many decades, often 20 to 30 years or even longer. Regular pumping and avoiding harsh chemicals are crucial for extending their lifespan. Neglecting maintenance in areas like Highlands or Capitol Hill can significantly shorten their service life.

How often do septic tanks need to be emptied?

Septic tanks typically need to be pumped every 3 to 5 years, depending on household size and water usage. For larger families or those in denser areas of Denver, more frequent pumping might be necessary. Keeping track of your tank's usage in neighborhoods like Montclair helps determine the best schedule.

How much does it cost to have a septic tank pumped?

How often should a septic tank be pumped?

Pumping frequency is generally every 3 to 5 years for a typical household. However, this can change based on the number of people using the system and the volume of wastewater. In busier households or specific Denver neighborhoods, you might need to pump more often to prevent issues.

Also serving nearby: Aurora · Thornton · Centennial · Westminster · Lakewood

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More on this: EPA SepticSmart — maintenance schedules.

Service area details

716,577residents

4,681per sq mile

8ZIP codes served

Serving all of Denver — population 716,577; about 4,681 residents per square mile across 153.1 sq mi. ZIP codes covered include 80201, 80202, 80203, 80204, 80205, 80206, 80207, 80208.

Neighborhoods served in Denver: Cherry Creek, LoDo, Capitol Hill, Highlands, Washington Park, Stapleton — and every surrounding area.