Yes, sadly the infrastructure / services can't really cope with modern packaging etc.
Weekly, people would just throw their rubbish onto the street, sweep their shops out into the streets, and collectors would come by to themselves sweep it up and take away in open dump style trucks.
The rivers through town (Bagmati & Bishnumati Rivers) were full of rubbish
No one would drink tap water, well, no one in their right mind that could afford the bottled water, which from what we saw everyone there did, tourists and locals.
Thankfully the products there matched people very low incomes, from memory 1lt bottled water was about AU$0.20c, a roll of toilet paper AU$0.15c . . . and if you drank the local water you'd probably be using a lot of toilet paper !!
I remember our 'hotel' had tepid water once in our perhaps 8 overall nights staying in town, the rest of the time it was very cold, and at anytime, from the rank smell of the water, you would come out smelling worse than you went in !!
Anyway, those are the experiences of travel, and the things you remember like yesterday.
Along with the Nepalese people being some of the kindest you will find.