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How to Increase Bacteria in Septic Tanks Naturally | Maintaining Your Septic System


Our many clients want to know how to increase bacteria in septic tanks naturally. That’s why we are setting out to write about this with our previous and present plumbing experiences.

When it comes to maintaining a healthy septic tank system, the importance of bacteria cannot be overstated. Bacteria play a crucial role in breaking down organic solid waste, preventing issues like sludge buildup, clogged pipes, and foul odors.

If you’re wondering how to increase bacteria in septic tanks naturally, you’re in the right place. In this article, we’ll explore organic methods, household habits, and the role of septic tank additives in promoting a thriving bacterial population.

Also, If you are wondering for an expert team to solve this professionally then don’t forget to contact us at Plumbers Sherman TX.

How to Increase Bacteria in Septic Tanks Naturally

Yeast: A Monthly Boost

Yeast: Yeast is a natural ally in promoting bacterial activity in your septic tank. Once a month, flush a 1/4 oz. packet of yeast down the toilet to introduce healthy enzymes and enhance bacterial growth. However, be cautious not to overuse yeast, as excessive amounts can make the tank frothy and potentially lead to backups.

Rotten Tomatoes: Before tossing those old tomatoes from the back of your pantry, consider using them to benefit your septic tank. Every four months, push 3 to 4 rotten tomatoes down the garbage disposal to introduce decaying matter and stimulate bacterial activity.

Why is Bacteria Important? Bacteria are pivotal in breaking down solid waste within the septic tank. Without bacteria, solid waste accumulates, occupying more space and causing the tank to fill up faster. Healthy bacteria ensure optimal functioning and longevity of your septic system.

Read: How to Install a Sump Pump in a Crawl Space

Septic Tank Additives: A Cautionary Note

While there are methods to naturally boost bacterial activity, it’s important to note that the Environmental Protection Agency (EPA) does not recommend chemical additives for septic tanks. Most systems operate effectively without additives, and their use can even harm the environment and compromise system performance.

Household Habits for a Healthy Septic System

Using Natural Cleaning Products

Step 1: Use Natural Cleaning Products Traditional cleaning products containing bleach can harm the beneficial bacteria in your septic tank. Opt for natural alternatives like white vinegar and baking soda to preserve the bacterial balance while keeping your home clean.

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Switching to Natural Soap

Step 2: Switch to Natural Soap Antibacterial soaps, while effective for hand hygiene, can disrupt septic tank bacteria. Transition to natural soaps to maintain a healthy bacterial environment.

Toilet-Friendly Toilet Paper

Step 3: Use Toilet-Friendly Toilet Paper Choose white toilet paper that breaks down easily to prevent challenges for septic tank bacteria. Conduct a simple water jar test to ensure your toilet paper is septic-friendly.

Proper Medicine Disposal

Step 4: Dispose of Medicine Properly Flushing prescription medication down the toilet can harm septic tank bacteria. Safely dispose of expired or unused medications at a hazardous waste facility.

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Avoiding Non-Flushable Items

Step 5: Don’t Flush Non-Flushable Items Non-compostable materials like wipes, menstrual products, or diapers can disrupt septic tank bacteria. Avoid flushing these items to prevent potential clogs and bacterial imbalance.

Grease and Fat Disposal

Step 6: Avoid Pouring Grease or Fat Down the Drain Dispose of grease in an airtight container and throw it in the trash to prevent clogs and excess solid waste in the septic tank.

Routine Inspections

Step 7: Get Routine Inspections Regular septic tank inspections, typically every 1 to 3 years, are essential to identify and address potential issues before they become serious.

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How Do I Increase Good Bacteria In My Septic Tank

A septic tank system functions as a small-scale wastewater treatment plant, relying on bacteria to degrade organic solid waste. Maintaining a balance of healthy bacteria is crucial for optimal system efficiency. However, common household practices can disrupt the microbial ecosystem, leading to issues like sludge buildup and septic tank malfunctions.

What Affects Bacterial Population

  1. Chemical Cleaners: Regular use of chemical cleaners can eliminate beneficial bacteria, hindering the waste digestion process.
  2. Non-Biodegradable Waste: Flushing non-biodegradable waste down the toilet strains the bacterial community, making them less effective.
  3. Anti-Bacterial Soaps: Products like anti-bacterial soaps and harsh chemical septic tank treatments can kill off microbes.
  4. Excessive Water Use: Using too much water at home can disturb the septic tank environment, affecting bacterial performance.

How to Increase Good Bacteria

To ensure a thriving bacterial population in your septic tank, follow these measures:

  1. Use Septic Tank Enzymes: Consider using septic tank enzymes like Bioclean Septic to boost beneficial bacteria and aid in organic waste degradation.
  2. Bioclean Septic Plus: This solution enhances bacterial activity, aiding in the breakdown of fecal matter and food waste.

Adding bacteria to your septic tank not only promotes a healthy ecosystem but also reduces the need for costly mechanical maintenance. Products like Bioclean Septic offer sustainable and advanced solutions for septic system care.


Maintaining a healthy bacterial population in your septic tank is crucial for the smooth functioning of your wastewater system. By adopting natural methods, embracing household habits that support bacterial growth, and choosing environmentally friendly additives, you can ensure a thriving septic tank environment. Remember, a little care goes a long way in preventing issues and extending the life of your septic system.

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