Value |
Category |
1 |
Septic tank / cesspit |
2 |
Piped sewer system |
3 |
Yard |
4 |
Canal / river / ocean |
5 |
Trench / drain / gutter |
8 |
Don't know |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.