An RVer planned to live in a camper for about 3 months at in-laws’ house and asked whether dumping about 20 gallons from the black tank into the home septic every 7 days with a macerator pump could damage the system. Members generally felt that amount should be manageable for a healthy septic system, but several noted that the age, condition, tank size, and leach field capacity matter, especially since the house was built in 1965 and the tank was later identified as 500 gallons.
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An RVer planned to live in a camper for about 3 months at in-laws’ house and asked whether dumping about 20 gallons from the black tank into the home septic every 7 days with a macerator pump could damage the system. Members generally felt that amount should be manageable for a healthy septic system, but several noted that the age, condition, tank size, and leach field capacity matter, especially since the house was built in 1965 and the tank was later identified as 500 gallons.
Suggestions included having the septic pumped and inspected, asking about records or tank size, dumping slowly or more frequently to reduce turbulence, and using some grey water afterward to rinse the macerator hose. Members also warned that grey water dumped on grass can smell, and discussed avoiding septic problems from wipes, grease, excessive toilet paper, harsh chemicals, bleach, and garbage disposal waste. The original poster later reported that the first macerator pump dump worked fine, so the practical outcome was positive, though members still treated septic condition and leach field performance as the main unknowns.