The rate of accumulation of sludge in septic tanks is recommended as____________________?
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.
A. 25 litres/person/year
B. 30 litres/person/month
D. 25 litres/person/month
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.