Normal water use for a family of 4 (NYC)

[Luis Rodriguez]

Hello,

We bought a duplex in October of last year. Our water bill has been a lot higher compared to the bills in the last three years. I know a total of eight people lived in both units before we purchased the home and now it's just my fiance & I who live in the bigger unit and four people upstairs. The grandma is over a lot and I've gone upstairs to check something out and she will be in a robe so we aren't sure how much she stays over. The kids are home schooled so they're always home.

We had a leak which we took care of, but still not much of a difference in the bill. We would of been fine with the bill staying the same, but it's just getting to be too much. She's a quiet tenant who pays rent on time and we'd love for her to stay.

How would you guys approach the situation ?