Tap water in the US costs on average about $0.01 per gallon or less. People typically drink a gallon or less per day, so about $0.30 per month. Your water bill is pretty much not affected by the tap water you drink, just the water you use for everything else.
Bottled water is easily hundreds of times the cost.
Bade is the past tense of “bid” and is technically pronounced the same as “bad”. Link: https://dictionary.cambridge.org/us/dictionary/english/bade
Essentially, the pronunciation follows the same pattern as words like “sit - sat”, but the spelling pattern follows a different Old English pattern.