I only have a few properties that have private hydrants. Each city is different. In Raleigh, NC and the towns it provides water to, I simply pay $2k a year for a hydrant meter(which I keep in my possession) and call in monthly meter readings. $3 per 1000 gallons. Other towns you have to call in advance and they set their own meters on the hydrants you request. They charge the same amount per 1000 gallons but charge a daily rental fee. Some towns don’t charge for water at all or require meters but you pay 3 or 4 hundred a year for a sticker to put on your trucks to show that you are using an air gap above the tank. Some require you to provide your own meter and then you just pay for the water. Sounds like a lot of headache but AI do the same properties year in and year out so I know what each city in each state requires. Advantage is never waiting on water or dealing with properties with non functioning water faucets or faucets that leak into apartments. Lot of newer properties do not have faucets on them at all.