Assertion: septic tank | /r/HasAspect | two compartments
Facets:
value: until the mid-1970
type: TEMPORAL
Source sentences:
text: Septic tanks installed after the late 1980s have two compartments, and it is important to pump out both compartments each time.
text: Until the mid-1970's, septic tanks had one compartment; however, current regulations require two chambers, which do a better job of settling solids.
text: Most homeowners are unaware when their septic tank has two compartments; some companies use that to their advantage, charging to pump both sides of the tank but only actually pumping out one.