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Can I Dilute Liquid Bleach for My Aerobic System?

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Can I use bleach in my aerobic system?

Operating and maintaining an aerobic system requires you as the homeowner to add chlorine to your septic system. If you choose to use liquid chlorine, you can dilute it without rendering it ineffective.

Recipe for diluting bleach

Diluting your bleach is not required, but if you’d like to save a few extra dollars we recommend diluting concentrated liquid bleach with 2 parts water and 1 part bleach.

Note that I said concentrated bleach. If the bleach you purchase is labeled “regular strength” instead of “concentrated,” you should not dilute it.

Warning: do not use pool chlorine

Do not use pool chlorine tablets or liquid in your aerobic system — it’s ineffective at treating wastewater, and over time can build up enough nitrogen chloride to cause an explosion.

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4 thoughts on “Can I Dilute Liquid Bleach for My Aerobic System?

  1. Do I still need to pour something down the toilet? I think it’s called REX? And how often do I put chlorine in the tank outside?

    • You don’t need to add any additives down the toilet, and sometimes that can do more harm than good. How often you need to add chlorine will depend on your usage – you will just need to monitor it. Check it every 2-4 weeks on average.

  2. I have an aerobic system and have had no problems until lately when we had a lot of rain. We have many gopher tunnels in our neighborhood. After heavy rains the septic tank fills up and the sprinklers go off. That is when I have noticed that a sink hole was forming towards the bottom of the yard. I then found that a gopher tunnel was carrying the water to the sink hole. Could this be that I have a leak in the sprinkler lines? I have three sprinklers and that would be difficult to find out where the leak is. This only happens when we get a lot of rain and the sprinklers go off more often. Also, the water from the sprinklers does not hit the area where the tunnel is.

    • Gophers are not a problem in our area. This is something I’ve never heard of before, so I’m afraid I don’t have any advice except to contact a local aerobic system service company to visit your property for evaluation. Best of luck!

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