SEATTLE (AP) — Seattle has received over 70 reports of businesses not complying with its new all-gender restroom ordinance since the city began enforcing it in March.

The Seattle Times reports 33 people filed the reports. No businesses have been fined but they've been sent letters advising them to change their signs and provide evidence they did.

Passed in 2015 by the Seattle City Council and Mayor Ed Murray, the ordinance prohibits gender-specific, single-occupant restrooms in city facilities and public establishments such as bars, restaurants, museums and stadiums.

The ordinance also requires those establishments to use signs specifying that their single-occupant restrooms are meant to be used by people of all genders.

The Seattle Office of Civil Rights says the goal is to improve restroom access for transgender individuals and people who consider themselves neither exclusively male nor female.