Literal question
Chapter C. Household information
21. The toilet wastewater goes to...
[] 1 Hole or pit?
[] 2 Septic tank?
[] 3 Public system (sewer)?
[] 4 Surface of the earth, stream, river, etc.?
Interviewer instructions
C. Information about the household
Question 21: The bathroom drains to...
21. The bathroom drains to...
Public network (sewer): when the bathroom has a system of pipes through which the human residue drains.
Septic well: when the bathroom is connected to a septic tank.
If the dwelling has more than one type of bathroom, note the most modern drain.