SDcampowneroperator wrote:
1 oz. of bleach to 50 gal. of black water will neutralize the waste. More bleach can cause serious harm to the digestive systems of wastewater treatment systems. Please use bleach sparingly on non community waste water systems. It kills the bacteria that treat the waste.
Not sure how accurate that is. A good friend of ours retired as the county's septic inspector. She told me bleach was fine in moderation for a septic system, it is the anti-bacterial cleaners to watch out for as they will persist.
So I did some quick searching.
Link1 Link2 Link3Short answer is excessive bleach is bad. Moderate is acceptable. Excessive is defined as more than a gallon per day (around 15 loads of whites only laundry with bleach).
So yes, a large amount of bleach is bad for systems. But pouring a couple 'glugs' of bleach in to an RV black tank and subsequently dumping it is not going to ruin a septic or municipal treatment system.
-Eric