The power plant visit was nice as well.
The Sewage treatment plant was amazing. It can work 24/7 but works only 18 hours a day coz there is NO sewage being pumped from the government/corporation center in the night. The plant purifies almost more than half of the city's sewage into pure water (Not advisable for drinking just coz its like distilled water....lacking in essential minerals)
I'm off now, dead tired... Rest later.