1. Design and Installation of Small Sewage Treatment Works and Cesspools;British Standards Institution,1983
2. Septic Tanks and Small Sewage Treatment Plants;Mann,1979
3. The Operation and Maintenance of Small Sewage Works;National Water Council,1980
4. Septic Tank Systems Recommendations for Domestic Effluent Treatment and Disposal from a Single Dwelling House;National Standards Authority of Ireland,1991
5. Septic Tank Maintenance;OSU,1999