[QUOTE=ducksface;222999]
My links say simply:
Don't drink from a black tank with antifreeze in it.
Now show me where it harms a sewer system and then show me where it harms a septic tank. QUOTE]
A simple search produces - <https://medlineplus.gov/ency/article/000774.htm>
From the EPA Septic tank guidelines -
<https://www.epa.gov/sites/production/files/2015-10/documents/rv-wastewater.pdf>
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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