Chlorine Tablets and Aerobic Septic Systems – Questions and Answers

We often get calls from aerobic septic system owners with questions about chlorine tablets. We have addressed the most frequently asked questions below.

What does chlorine do for my system?

We are often asked why do aerobic septic systems have to have chlorine? What does it do anyway? A simple answer is just another question. Why do you put chlorine in a pool? You put chlorine tablets in your septic system for the same reasons that you put chlorine in a pool – to disinfect the water and keep people from being exposed to potentially dangerous bacteria.

Chlorine tablets act as a disinfectant for the wastewater. If chlorine is not present in your system you will be spraying straight wastewater into your yard. This can expose you and your family, as well as neighbors, to dangerous bacteria, viruses, and parasites. These can cause Hepatitis, typhoid, cholera, tape worms, and many other illnesses. Chlorine tablets are specially formulated to kill 99% of bacteria within 10 minutes, making your wastewater safer for distribution.

What kind of chlorine should I use?

The type of chlorine depends on the system. Most systems take chlorine tablets, but a few take liquid bleach. Please check the manufacturer’s recommendations for your system. If you need help finding the manufacturer or type of system you own please give us a call and we can help.

No matter what, do NOT put pool chlorine into your system. Pool chlorine is a different type of acid that can react with septic gases and potentially cause an explosion.

Where do I purchase chlorine tablets?

Tablets can be found at local hardware stores in 10lb buckets. Make sure you get SEPTIC chlorine not pool chlorine.

Can I get someone to do this for me?

You sure can. We offer scheduled maintenance packages that can be found HERE. If you have additional questions about your septic system or a septic problem, email or call us at 918-381-2050.

4 Responses to Chlorine Tablets and Aerobic Septic Systems – Questions and Answers

  1. LaDena Moore says:

    i would just like to know the laws in Oklahoma for aerobic systems cant find anything about it like what are the fines if your systems break down down have meticnece contract etc,also what is average cost to repair tank and pump one out, and how much does chlorine cost sorry for all the questions just want to make right decision oh and by the way i’m in creek co. thanks

    • admin says:

      I know we talked a couple weeks ago on the phone about these questions, but I just wanted to put a link up here in case anyone else has the same questions. The Oklahoma DEQ is in charge of regulating septic systems. The link I provided should help you find their requirements.
      Oklahoma does not require maintenance contracts, but does recommend them.
      Cost of repairs or pumping depends on your system size, model, and what the problem is.
      There are two types of chlorine systems- liquid and tablets. The cost will depend on the quantity and type you buy. Most times this can be found at your local hardware store. Always make sure to put the right kind for your systems.
      Thank you for contacting us!
      Provision Plumbing

  2. jason ayling says:

    How often should you have to fill the tube with bleach and would it be more practical to switch to tablet? Does the tablets last longer?

    • admin says:

      Chlorine addition is based on water consumption and varies for every household. We recommend checking your system whenever you do a regular chore. . For instance each week when you take the trash out go check your chlorine level. If it is low add some. After a few months of this you will have a good idea of the rate you are going through chlorine.

      Both liquid chlorine and tablets have advantages. Liquid chlorine can be cheaper in the long run, but tablets are a little more convenient.

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