Mayor Zohran Mamdani’s administration released a list of addresses linked to the growing outbreak of Legionnaires’ disease — a severe form of pneumonia — on the Upper East Side, and it includes one of the city’s most famous museums.

The address lists 31 total buildings divided into two categories: 19 buildings that have drained, cleaned and disinfected their cooling towers; and 12 buildings where the cleaning is still pending. Each of the buildings listed had previously tested positive for the presence of the Legionella bacteria.

Below is a list of the buildings where cleaning was still pending, according to the New York City Department of Health and Mental Hygiene:

1875 Second Avenue 

1110 Fifth Avenue

153 East 78th Street

135 East 79th Street

300 East 79th Street

238 East 81st Street

160 E 84th Street

114 East 85th Street

401 East 88th Street

333 East 91st Street

354 East 91st Street

The buildings where the cleaning was still pending were ordered to have it completed by Saturday.

Here is a list of buildings that have already completed the cleaning process, according to the Health Department:

180 East End Avenue

1750 York Avenue

1660 Second Avenue

1438 Third Avenue

1511 Third Avenue

1551 Third Avenue

1071 Fifth Avenue

1080 Fifth Avenue

1001 Fifth Avenue

240 East 82nd Street

8 East 83rd Street

145 East 84th Street

117 East 85th Street

125 East 87th Street

152 East 87th Street

120 East 87th Street

501 East 87th Street

168 East 88th Street

160 East 88th Street

Among the addresses that have completed the cleaning process is the Guggenheim Mueseum, at 1071 Fifth Avenue.

Releasing the addresses of impacted buildings is a step not taken by past administrations when Legionnaires’ outbreaks have occurred.

The information was shared after the number of sick people jumped Thursday from 28 to at least 46, including 22 current hospitalizations. The Health Department has been updating those counts daily around 10 p.m. recently.

No one has died, though NYC City Council Speaker Julie Menin, who has criticized the health department’s handling of the outbreak, says it’s only a matter of time, given the vulnerable senior population in that district. Health officials haven’t released information about the ages or potential underlying conditions of those sick.

The investigation is said to have started with two potentially linked cases at the start of July. The Health Department said water samples were collected from more than 180 cooling towers. As of Thursday, positive results were found at 31 buildings. Testing remains ongoing, and more buildings could be added to the list.

The Health Department noted that because testing does not distinguish between alive or dead bacteria, none of the results so far can confirm which buildings were the source of the exposure.

Authorities had previously said they zeroed in on 19 buildings as possible sources of infection. Pressure had been mounting to identify the buildings ahead of Friday’s release. The buildings have one thing in common: A rooftop cooling tower that has preliminarily tested positive for the bacteria that causes Legionnaires’ disease.

Even though longer-term testing is required to know if the bacteria detected is dead or alive — meaning harmless or dangerous — health officials said that all 19 buildings have already been ordered to drain and disinfect their towers, out of an abundance of caution.

Menin wants the city to be proactively disinfecting all cooling towers in the area, unless they have tested negative. 

“It is shameful to wait, to continue to wait, while we know more and more people every single day are getting sick and potentially can die of this disease,” Menin said Thursday. “We have to prophylactically disinfect and that is what I’m urging the Health Department to do immediately.”

But the New York City Department of Health and Mental Hygiene said disinfecting a cooling tower before a sample has been collected makes it impossible to trace whether that tower was the actual source of illness.  

In response to criticism from Menin, the NYC Health Department said in a statement: “Since July 2, the Health Department has been aggressively identifying cooling towers that test positive for the presence of Legionella bacteria and ordering building owners to clean and disinfect. We identified this cluster early and have acted quickly to get the word out to New Yorkers.”

The area of concern involves ZIP codes 10075, 10028 and 10128, covering the entire east side from about 76th Street to 97th Street — an area where both Mamdani and Menin live.

At senior centers just a few blocks outside that zone, city health workers were busy distributing information to East Side residents whose age and underlying health concerns put them at additional risk.

Health officials have said the problem is not the result of any building’s plumbing system, and that anyone who lives in the impacted area can continue to drink tap water, shower, cook, and use their air conditioners.