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How to Get Septic to Pass Inspection

By December 16, 2020September 13th, 2022Septic
How to get septic to pass inspection

If you live in the Northeast or the Southern part of the U.S., chances are when house hunting, you may come across a home that has septic instead of sewer. In fact, 1 in 5 homes have a septic.

When you are selling a home with septic, refinancing, or buying a home with septic, it is important to have it pass inspection. This is one thing in the home that you don’t want to fail on your watch.

Septic will pass inspection if the tank is emptied of sludge, no evidence of scum, and everything is flowing naturally through the septic tank. Why is the inspection important and how do you prepare for this inspection? What else you need to know to pass inspection, what is tested, how do septics fail inspection, the cost, and maintenance.

Why a septic inspection is important.
Pumping the septic is important to keep the system functioning properly

Why a Septic Inspection is Important

Conducting a septic inspection every year and pumping the septic every 2-3 years is recommended. This allows the inspector to make sure the tank is clean and working and also to ward off any potential problems before they become issues.

Unfortunately, not every homeowner follows this recommendation and doesn’t have it inspected until there are thousands of dollars worth of repairs or replacements needed. Before buying or selling a home or refinancing, an inspection is important and necessary.

State Rules on Septics

Every state has rules and regulations about septic tanks on the state government site. In Texas, this is located here.

You can find out information about what is allowed and recommendations for care of the septic. A septic inspector is certified and trained in this area to do a septic inspection.

How to prepare for the septic inspection.
Knowing the location of your septic is important for the inspection.

How to Prepare for the Septic Inspection

  1. Choose a licensed septic inspector to come to your home to conduct the inspection. Some home inspection companies are licensed for septic inspection and a good choice as well.
  2. If you are the homeowner, know the history of the septic, and the last time there was a septic inspection and pumping.
  3. Know where the septic is located on the property
  4. Have a list of concerns and questions for the inspector

Short on Time to Prepare for the Septic Inspection

If you are short on time to prepare for the inspection, look at the section on maintenance suggestions below, and see if you have time to do any of those before the inspection. Being diligent in keeping up with maintenance is great! If not, you could be in trouble.

How to Pass Septic Inspection


This is solid waste that settles to the bottom of the tank. Not emptying out the tank can allow it to pile up and cause excessive levels, as well as clogging and flow into the drain field. Routine pumping will empty it out.

During the inspection, the inspector can lower a stick into the tank to measure the level of sludge. It should not take up more than 1/3 of the tank’s volume.


Scum happens when oil or grease enters the tank. The idea is for it to flow out and the good bacteria can usually take care of this. If the scum is sticking around in the tank, addressing this issue is important.


The septic tank should have a natural flow. If this is happening then there are no clogs or backups causing damage to the systems.

The sludge, scum, and flow are the three main areas that are inspected, but each state is different so check your state for requirements.

What if the Septic Inspection Fails

The inspector will recommend what needs fixing or replacing. Once you correct these issues, you can have another inspection. If this inspection is to purchase or sell a home, speak to the realtor about the amount of time you have for this to be taken care of.

Unfortunately for many, this is a deal-breaker unless fixing or replacing can be quick. Also, talk to the inspection company about the estimate to fix or replace and see if this is negotiable with the buyer or seller.

Cost of the Septic Inspection

An inspection cost will vary depending on the size of the tank, the depth of the tank, and any other issues. Here at All Coast, ours are around $350.

Maintenance of the septic system
Low flush toilets help with maintenance of the septic system.

Maintenance of the Septic System

Maintaining the septic system is important in order to pass septic inspection and to keep a healthy tank. Here is a list of suggestions below. You can also use these when preparing for the inspection.

  1. Pump septic every 2-3 years as mentioned above
  2. Inspect around the pump every year for leaks or other issues
  3. Keep records of maintenance and pumping
  4. Use low flush toilets, low flow showerheads
  5. Clean lint regularly from the washing machine
  6. Check parts around the septic routinely and make note of anything that doesn’t seem to be working
  7. Only flush human waste and one-ply septic approved toilet paper
  8. Keep a lookout for leaks and have them addressed. What seems like a small leak can lead to bigger problems. Make a note of it.
  9. Spread out laundry over several days so there is no excessive use of water. When there is an overuse of water, it can cause the drains to back up and cause the inspection to fail.
  10. Shrubs and landscape – keep an eye out that there are no trees or shrubs growing near the septic. If there is, roots can grow into it and cause holes. Trees like the nutrients that are in the drain field and want to grow so keep an eye out for them and remove them before you have damage.
  11. Finally, the tank should be the right size for the number of people living in the home. If it is too small, pumping more often will be needed.

List of a Few Don’ts for Maintaining the Septic

  1. Do not use bleach and harsh chemicals – these chemicals kill the good bacteria that the septic needs. Clogs and backups can happen when the good bacteria doesn’t break down the matter.
  2. Don’t use the garbage disposal– it may seem like a good idea to use it, however, not in a home with septic. It does not break down the matter and can cause the septic to clog.
  3. Don’t drive on the drain field and keep rainwater drainage systems off the area. This can cause problems with the wastewater and clogging or backups.

Replacing a septic system can cost from $3,000- $10,000 so maintenance is essential. A system can last 25-30 years if taken care of properly.


Are you looking for a home and have questions about septic or about one on the property you live on? Leave us a note below and let us know what questions you have! We are here to help!

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