Mayor Bill de Blasio signed an unprecedented law regulating cooling towers throughout New York City on Tuesday.

After a deadly outbreak of Legionnaire’s disease in New York City that killed 12 people, he decided to sign the new laws to protect the city. City officials reported that the disease also sickened 124 people, all from Legionella bacteria that was in several air conditioning cooling towers in the Bronx, according to Reuters.

According to the new laws being signed-in, building owners are now responsible for inspecting all cooling towers quarterly. If they find anything at that time, they are also required to report it and take the lead on disinfecting the towers that are carrying dangerous levels of the bacteria.

The law also says that building owners have 30 days in which to register their cooling towers and if they do not comply with the law, they may be fined up to $25,000.

“This law changes the future of how the city of New York contends with this disease. And it served as a model for the new statewide regulations that were just formalized,” de Blasio said.

The governor for New York, Andrew Cuomo, released a similar statewide mandate that requires all building owners to register, test and inspect their cooling towers and are also required to disinfect them if necessary.

“This summer’s outbreak of Legionnaires’ disease caused concern in communities across the state, and today we are moving forward to help prevent future outbreaks and keep our neighborhoods safe,” Cuomo said in a statement.

At this time, the city is still working together with business owners, identifying and disinfecting every cooling tower as a precautionary measurement and follow-up after the deadly outbreak.

At this time, there have been no cases of Legionnaires’ disease reported since August 3.