KUALA LUMPUR, Jan 21 — If we were to lay down the entirety of peninsular Malaysia’s sewerage pipes in a straight line, its length would connect Cape Town in South Africa to Magadan in Russia.

What’s even more impressive is that this network of pipes — roughly 22,000km of sewer lines in total — is solely maintained by national sewerage operator Indah Water Konsortium Sdn Bhd (IWK).