If you want to know the cost of water in each city, it would be prudent to establish a standard by which to make that calculation.
My water bill includes charges for all types of infrastructure maintenance costs and to pay utility staff. There are also several different rate structures and variable rates depending on season, time of day, business vs. residential use, and more.
I might be paying more or less than someone the next town over who uses the same exact amount of water as me simply because one town pays their staff more, or I use more water during the day and the other person uses more at night.
In other words, withough rigourous standardized calculations made by you or another researcher, these responses will not qualify as reliable data.
In Bogotá (Colombia), rates depend on whether they correspond to basic consumption or not. Additionally, a price scale is applied based on a variable called "Socioeconomic Stratum", which is a classification of residential properties that must receive public services. It is mainly carried out to charge differentially for home public services, allowing subsidies to be assigned and contributions to be collected. Currently, I pay approximately 3,000 Colombian pesos per cubic meter (73 cents).
В 2024 году для населения Северо-Запада России ориентировочная стоимость (с НДС) воды, подаваемой из централизованной системы холодного водоснабжения, составила, руб./куб.м.:
- Санкт-Петербург: 36,54,
- в городах Ленинградской области, в диапазоне: от 25,56 до 114,78.
Ориентировочная стоимость подвоза воды (с НДС) в диапазоне, руб./куб.м.: от 630,0 до 1420,0.
Розничная стоимость упакованной воды по данным дата-маркета системы "Честный знак" ок. 28,0 руб./литр; стоимость природной воды, отпускаемой в розлив от 7,0 руб./литр.