Assertion: septic tank's content | /r/HasProperty | pumped
Facets:
Source sentences:
text: The contents of the septic tank should be pumped every two to three years or when the total depth of sludge and scum exceeds one-third of the liquid depth of the tank.
text: The contents of the septic tank should be pumped every two to three years or when the total depth of sludge and scum exceeds one-third of the liquid depth of the tank.