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True, I have seen far worse than this.
Once while going in a sub urban train in Mumbai, I saw a lady doing agriculture in an unused railway track, she had sewer or drainage like muddy soil in a broken railway track and was planting actively rice crop.
Then, I wondered where are the remaining railway tracks, that's when I realized all the houses in the ghetto was built using the railway track. The steel beams of the 2-3 storied ghetto partial houses where actually tracks stolen from the railway line.
People lived in the top floors because ground was filled with sewer river.
Tough life!
Every major city and urban in India has this problem. The infrastructure cost is massive for these upgrades and with corruption and maintenance of these structures, it gets even more massive!