Water bill almost doubled. Can this be prove of ilegal occupant

[Tina Lee]

Hi all, I have this tenant who water bill almost double up on same period of last year to this year . Super was telling me she has moved in few people . Last time he saw one guy and one girl this time he saw two guy and one girl.

I called her she say she only have over night weekend guest. and that’s all.

Please advice the matter what I should do. Is a studio size apartment now there is 3 or 4 people live there.

Super just told me he saw those people come in and put with a key but he refuse send me a text or picture. Which I undestand supers concern.

What can I do on court to prove the illegal occupant on court if I do take her for eviction?