Septic Tank Treatment: What Works and What to Avoid

There are two things that can be considered “septic tank treatment”: treatment of your septic system or a product that can be added to your septic tank. When most people are looking for treatment, they want to know how to take care of their system by using water efficiently and getting rid of waste correctly. Also, schedule inspections and pumping. Products are not a replacement for these things.

To determine if your septic tank requires treatment, you’ll want to look at several key indicators. First, you can look at how often you’ve had it serviced, what kind of system you have, and if anything is showing signs of needing to be serviced.

Key Takeaways

• Septic tanks work with the ground around them in your drain field to treat your wastewater.
• There are no recommendations from the EPA that suggest using additives for your home wastewater system.
• Maintain proper service records. Keep an eye on how much water your household uses. Keep things you shouldn’t pour down the drain out of the drain.
• Your average home will want its septic system looked at every 3 years. Your septic tank will need to be pumped every 3-5 years. This will vary based on your system’s needs.
• If you are experiencing backup or the smell of sewage, multiple slow-draining drains, or waste in your yard, it’s time to call a pro and not use a septic treatment.

What Does “Septic Tank Treatment” Mean?

Septic systems help treat your waste. Waste travels from your house to an underground tank where it separates into solids that drop to the bottom and other materials that float to the top. The partially treated water then travels to your drainfield, where your soil further treats the waste.

Your system naturally facilitates this process. When you use a tank additive, you are introducing a product into your toilet/drain that claims to alter what happens in your septic tank. This does not replace the need for pumping, inspections, repairs, or proper drainfield treatment.

If you have an issue, there could be many reasons why, stemming from your house, septic tank, pump, lines, or drainfield. No product can diagnose the specific nature of your problem. If you are unsure what routine care involves, see this guide to septic system maintenance tasks.

Comparing Care Options

Option	What it can do	What it cannot do	When to consider it
Routine homeowner care	Reduce avoidable strain and help protect the system	Diagnose or repair a failed component	As part of regular household habits
Septic additives	Add ingredients to the tank, depending on the product	Replace service or be assumed to fix a symptom	Ask a local professional or regulator before using one
Professional assessment	Check the system and advise on service or repairs	Guarantee that every issue has a quick or low-cost fix	For scheduled inspections or warning signs

Considering a septic additive?

If you’re considering septic tank additives for domestic wastewater treatment, review the product information here: View Septifix product information.

Disclosure: This is an affiliate link. The site may earn a commission if you buy through it, at no extra cost to you. This link does not mean the EPA endorses the product or that it can repair a septic system.

Routine Care That Helps a Septic System

First, learn about your system’s type and know its location. Locate permits, drawings, inspection information, and pump receipts. If you are unable to locate this information, contact your local health department or permit office to see if they have any on file. It’s good to know where your tank and drainfield are before digging in your yard.

Do not park on your drainfield or allow excessive water to flow into it. Roof drains and sump-pump discharge should not be pointed towards your drainfield. Too much water flowing into your drainfield can cause problems with how your system functions. There are many different opinions on what can be planted around your system. Just make sure you don’t plant anything that will grow too close to your system.

Be mindful of how much water you are using. Everything you put down your drains goes into your septic system. Make sure your toilets aren’t running and faucets aren’t dripping. Try to spread your laundry out over the course of the week instead of dumping a lot of water into your system at one time. Use water-efficient fixtures and appliances if possible. While these will not fix your system, they can help reduce the amount of water going into it.

Only use your toilet and sink for their intended purposes. According to the EPA, you should only flush human waste and toilet paper. Don’t pour grease down the drain or put any household products down your drains. Not only will this help your plumbing but also your septic system.

Are Additives Necessary? What Does the EPA Say?

No. According to the EPA, you do not need to use septic tank additives in your home’s wastewater. As stated on the EPA’s 2024 septic tank additives fact sheet, they believe there are already microorganisms living in your onsite system. Additives cannot be beneficial to your system and may even damage it or the environment.

Just because the EPA believes additives should not be used does not mean that all additives have been shown to be harmful to your septic system. However, you should know that additives may not work for your home or fix your issue. Using bacteria or enzymes does not guarantee that they will solve your specific home issue.

You should not rely on an additive to take the place of inspections, pump-outs, repairs, or what your local regulator may require. Using an additive when your home is having issues can mask what your true problem may be. Speak to a professional or your local regulator before using any septic additives. Learn more about one additive that can be used here: Septic Tank Treatment Pods.

How Often Should a Tank Be Inspected or Pumped?

Your septic company will inspect and pump your septic system and/or tank. Your tank should be pumped when there is excess solid/scum buildup. There are cases where your tank may need to be pumped after an inspection.

Your average household system should be inspected by your septic company every 3 years. If you have any mechanical devices in your system, such as a pump or switch, you should have them inspected annually. Septic tanks for the average household are pumped every 3-5 years. Again, these are just guidelines for your septic system.

Many factors determine when your tank needs to be pumped: the size of your tank, how many people live in your home, how much water you use, the amount of solids that accumulate in your tank, what type of system you have, and local regulations. Always follow your inspection recommendations and have the work done by a licensed professional. Keep track of all your information so you’ll know when it’s time to have your tank serviced again. Check out our article on how often you should have your septic tank pumped to learn more about why your tank may need to be serviced sooner.

Do NOT open or enter your septic tank. Septic tank gases can be life-threatening if you come into contact with them. Always leave it to the professionals.

What Should You Keep Out of the Drain?

You should only be putting human waste and toilet paper down your drain. Wipes, paper towels, diapers, feminine products, floss, cigarettes, and cat litter can all cause issues in your pipes or septic system. Just because they are “flushable” doesn’t mean you should throw them in your toilet.

You don’t want to dump grease/oil or excessive amounts of food down your sink. Keep harmful chemicals such as paint, solvents, pesticides, and oil away from your home drains. Read the instructions on your bottles and dispose of them properly in your local area.

Don’t flush medications down your toilet unless instructed to do so on the bottle. Check with your local pharmacy to see if they have a disposal program. Garbage disposals can cause your septic tank to fill up faster than normal, so keep that in mind.

Are Household Cleaners Safe?

As with everything, there is a middle ground. You can use household cleaners as normal, and your system will be fine. But if you were to pour too much down your drain, it could harm your system. According to the New York State Department of Health, “Bleach, disinfectants, cleansers, and antibacterial soaps when used for their normal household applications will not affect the operation of your system.” You should avoid discharging or using harsh chemicals and products that kill bacteria.

The EPA recommends that you should not dump any oil-based paints or solvents down your drain, nor pour excessive amounts of toxic household cleaners down your drain. Use your products as directed on the label. Do not empty any excess concentrated products down your drain. If you accidentally spill or dump too much down your drain, call your local health department or septic company. Do not try to add another product to correct your system.

Warning Signs of a Septic-System Problem

A single sign does not necessarily indicate failure. For example, one slow drain could be due to an isolated clog. However, multiple slow drains, gurgling sounds, or odors may signal a more serious issue and warrant further investigation.

According to the EPA, here are some warning signs to look for:

• Backups in your home through drains.
• Multiple slow drains (sink, tub, toilet).
• Gurgling sounds from plumbing.
• Smell of sewage inside your home or around your tank/drain field.
• Puddles of water or saturated ground around your tank or drain field.
• Lush or spongy grass over your tank or drain field (when there has been no rain).
• Raw wastewater coming to the surface.

The EPA’s “What to do if your septic system malfunctions” lists these symptoms and what you can do to address them. Do not walk on or come into contact with sewage. Keep children and animals away. If you are experiencing any of these symptoms for an extended period or observe multiple issues, call a septic service or your local health department.

What to Do About a Backup or Wastewater in the Yard

If you are experiencing a backup, immediately stop using all water. This includes flushing toilets, running dishwashers, showering, and doing laundry. Any additional water will exacerbate the problem. Keep yourself and your animals away from any sewage or contaminated areas. Do not come into contact with wastewater.

If wastewater is surfacing on your property, stay away from the area. Do not allow children or animals to play there. Do not attempt to bury or pump the wastewater, or treat it with any chemical/biological products. Call a septic service professional to resolve the issue. If sewage is entering your home or making its way to a body of water, contact your local health department.

The problem could be a plumbing issue or clog, a full septic tank, or an issue with the pump or drain field. Only an evaluation can determine the cause. This guide to what to do during a septic tank backup outlines practical response steps.

When Should You Call a Septic Professional?

Have your system inspected or pumped when due. If you’re unsure when it was last serviced or have an alarm/mechanical part that needs servicing, call immediately. Also, call immediately if you have backups, several slow drains, a sewage smell that won’t go away, or see water/waste at the surface of your ground.

Call a plumber if only one drain in your house is slow. If multiple drains are slow or you see something at your tank/drain field area, you should call your septic service provider. You can always call your local health department to see who deals with septic systems in your area.

Let them know what you see and how long you’ve had this issue. Is it affecting one drain or all drains in your house? Have records ready if you know when your system was last serviced. Never open your septic tank or try to repair parts that are in the ground.

FAQs

Will Septic Tank Treatment Fix My Slow Drains or Odor?

No, there is no product that will fix your slow drain or odor. One slow drain can be a plumbing issue. Multiple slow drains or an odor could be a sign of a septic system problem. Have a professional come look at your issue.

Does my septic tank need bacteria?

According to the EPA, no. Microorganisms are already found in onsite wastewater treatment systems. Do not add products to your system thinking it needs bacteria.

Is every 3-5 years the correct time to pump my septic tank?

No, this is just a general number that the EPA has for residential homes. There are many things that can affect how often you should have your septic tank pumped: the size of your tank, how often you use your home, inspection results, the type of system, and the area you live in.

If my septic system backs up, should I stop using water?

You should stop using your water if you have sewage backing up into your home. Call a professional and keep everyone away from the sewage.

Can I use bleach if I have a septic system?

According to the NYS Department of Health, it will not harm your septic system. Do not pour large quantities of toxic cleaners or chemicals down your drains.

What does my area require me to do with my septic system?

There are different regulations depending on where you live and what type of system you have. Check with your local health department or permit authority for information about your area..

Not sure what your system may need? Don’t worry about trying to figure it out on your own. You can look at your service history and consult a septic professional. There are many things that could be causing your issue. Each system varies.

Conclusion

Use good septic tank treatment by taking care of your system. Know when it needs to be pumped and what you can do to prevent issues. Stop using your water and call a professional if you have any sewage issues or backups. Do not use a septic tank treatment to fix your problem.

Affiliate Disclaimer

Some links in this article may be affiliate links. If you click a link and make a purchase, we may earn a small commission at no additional cost to you.

We only recommend products and services that may be useful for septic system maintenance and care. Affiliate relationships do not affect the information or recommendations in this article.

Additional Resources

Learn more about septic tank treatments, additives, maintenance, and repairs with these related guides.

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• What Happens If You Skip Septic Treatment?
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• Septic Tank Pumping: Schedules, Signs, and Care
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Official U.S. Government Resources

• How to Care for Your Septic System
  Get practical guidance about water use, drainfield protection, inspections, and maintenance.
• Why Maintain Your Septic System?
  Learn how regular care can help prevent backups, system damage, expensive repairs, and water pollution.
• EPA Septic System FAQs
  Find answers about septic additives, pumping, inspections, garbage disposals, and common system problems.
• Resolving Septic System Malfunctions
  Learn what to do when you notice slow drains, sewage backups, bad odors, wet areas, or other failure signs.
• EPA Septic Tank Additives Fact Sheet
  Review government guidance about septic tank additives and why regular maintenance remains important.

Always follow local regulations and contact a licensed septic professional for inspections, pumping, repairs, or serious system problems.