17. But they were soon unable to cope with the volume.

18. This led to the establishment of sewage treatment plants.

19. If you lived in the kampung areas, you either used the river...

20. ... or the beach.

21. In the towns, sewerage pipes did not exist. Sewage was removed MANUALLY!

22. It was only in the 1950s that FLUSH TOILETS were introduced here. In bigger towns like KL, sewerage pipes leading to central treatment plants were installed and septic tanks built.

23. Less than half of our towns have proper sewerage systems. And we produce 5 million tonnes of sewage every year.

24. A lot of it goes straight into our rivers and seas...