Depends on the system too
I lived with septic systems for 55 years. The last one was where I lived for 25 years.
I paid no attention to bleach, washing machine soap or anything that went down the disposal. If it was on the plate it got washed down the sink. The system worked great and I never had problems. Give me septic over city sewer any day.
I have rental properties in the Boston Metro area that are on MWRA water and sewer. The bills are astronomical and only going up. (Because government is involved)!
So, in my opinion, if you have a good septic system, nothing will bother it.
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