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How much does a septic system cost in Arizona?

Author

William Rodriguez

Published Jan 09, 2026

On average, replacing a septic system can range from $6000 to $50,000, and that is including financing.

How much does it cost to put in a septic tank in Arizona?

Installing a new conventional septic system can cost from $4,000 - $5,000+/-. Alternative systems may cost in the range of $10,000 - $20,000 . . . or more. In Arizona, an estimated one of every five households is served by some type of onsite wastewater system.

How much does it cost to put in a well and septic system in Arizona?

The cost to put in a well and septic system ranges from $6,000 to $20,000 depending on the type of septic system, type of absorption field, size of the septic tank, and depth of well drilling required.

What is the cheapest septic system to install?

The cheapest option is a plastic septic tank. These tanks are generally lighter and easier to install than concrete or fiberglass options. They are watertight and resistant to water corrosion. Plastic septic tanks typically cost around $1,200.

What is an engineered septic system?

An advanced septic system (sometimes called an engineered septic system) is a secondary treatment unit that removes wastewater contaminants before discharging treated effluent to your drain field, a ditch, or a watercourse.

21 related questions found

What can I use instead of a septic tank?

Mound systems work well as alternatives to septic tanks when the soil around your home or building is too dense or too shallow or when the water table is too high. Although they are more expensive and require more maintenance than conventional systems, mound systems are a common alternative.

What is an alternative septic system in Arizona?

An alternative septic system is a system that is a little different from the conventional style septic system. An alternative system is needed when the site and soil conditions on a property are limited, or when the wastewater strength is too strong for environment to receive it.

How long does a septic tank last?

Steel septic tanks have a life expectancy of 15 to 20 years. These should not be used for new installations but can still sometimes be found in older rural properties. Plastic (PE) or fiberglass tanks (GRP) have a life expectancy of 20 to 30 years.

How much does it cost to pump a septic tank?

Typically, a homeowner will pay between $250 to $500 for a septic system pumping. Sometimes, a homeowner can save money by preparing the area for the septic tank technician. For example, the homeowner can ensure the tank access port is cleared for the technician.

How do septic tanks work?

The septic tank is a buried, water-tight container usually made of concrete, fiberglass, or polyethylene. Its job is to hold the wastewater long enough to allow solids to settle down to the bottom forming sludge, while the oil and grease floats to the top as scum.

How deep are wells in Arizona?

Groundwater supplies are found in hydrological basins throughout Arizona. Many citizens obtain all their freshwater supplies from wells. Cities, the Salt River Project and others operate deep well pumps in Maricopa County. The average depth from ground surface to the water table is about 300 feet.

Can I drill my own water well in Arizona?

Prior to drilling a new well, or deepening or modifying an existing well, a Notice of Intent to Drill must be filed with ADWR. Forms are available on this site and must be submitted to ADWR accompanied by the appropriate filing fee. Authority to deepen an existing well or drill a new well will be valid for one year.

How much is it to dig a well in Arizona?

What is the cost of drilling a water well in Arizona? The price can vary a lot, based on some of the factors we've listed, but the overall cost is likely somewhere in the range of $27 – $58 per foot.

How much does it cost to put electricity on land?

How much will bringing utilities to the land cost me? Well, the short answer is that it depends. Utility costs can be anywhere from $10,000 to over $30,000 depending on your location and proximity to public utility connections. Furthermore, some cities and power companies charge more for their services.

What is an anaerobic septic system?

Anaerobic septic systems involve the use of bacteria that don't require oxygen to live. In an anaerobic system, you've got a septic tank with two main pipes. One of these goes to the house, and the other heads out into your yard. That main pipe splits into several pipes that sit just below the surface of your lawn.

How much does a septic system cost in California?

On average, the cost of installing a new septic tank system is $3,900. The price ranges from $1,500 to $5,000 for a typical 1,250-gallon tank, which is an ideal size for a three- or four-bedroom home. This cost is inclusive of the tank itself, which costs $600 to $2,100 or more, depending on the type.

How do you know if septic tank is full?

Here are some of the most common warning signs that you have a full septic tank:

  1. Your Drains Are Taking Forever. ...
  2. Standing Water Over Your Septic Tank. ...
  3. Bad Smells Coming From Your Yard. ...
  4. You Hear Gurgling Water. ...
  5. You Have A Sewage Backup. ...
  6. How often should you empty your septic tank?

How often does a septic tank need emptying?

When should a septic tank be emptied? Generally, a septic tank should be emptied once every three to five years.

How long does it take to fill a septic tank?

Therefore, it will take about 5 years for one adult to fill 300 gallons of a 1,000-gallon septic tank with sludge and scum. A family of four will fill the 300-gallon storage volume of a 1,000-gallon septic tank in about 1.5 years.

What is the most common cause of septic system failure?

Most septic systems fail because of inappropriate design or poor maintenance. Some soil-based systems (those with a drain field) are installed at sites with inadequate or inappropriate soils, excessive slopes, or high ground water tables.

Do I have to replace my septic tank by 2020?

Under the new rules, if you have a specific septic tank that discharges to surface water (river, stream, ditch, etc.) you are required to upgrade or replace your septic tank treatment system to a full sewage treatment plant by 2020, or when you sell a property, if it's prior to this date.

Do septic tanks smell?

A properly-maintained septic tank should be odor-free, so if you notice a bad smell inside your home or outside near the leach field, it's a sign that there's a problem. A foul smell doesn't necessarily mean the septic tank needs to be pumped, however.

How long do septic tanks last in Arizona?

The usual design life of a septic system is 20 years.

Can a homeowner install a septic system in Arizona?

SITE EVALUATION - Although conventional septic systems may be installed by the homeowner if certain criteria are met, the site evaluation must be done by an Arizona- registered professional engineer, geologist, sanitarian, an appropriately licensed septic or plumbing contractor (K-41 or L-41) who has completed training ...

Who pays for septic inspection in Arizona?

Septic Inspections Home Seller – Who Pays For The Septic Tank Inspection? It's Arizona law that the seller/owner is responsible for requesting septic tank inspections in Arizona. ADEQ says that the owner/seller if the home must obtain a septic inspection.