FloodNYC
Browse all flood guides →

Start here

Water damage in NYC: what to do first

Finding water in your home can turn a normal day into a scramble. You do not need to solve everything at once. Start with people, then the source, then a clear record of what happened.

FloodNYC · GreenRoom Remediation LLC · Updated November 10, 2026

Safety first. For immediate danger, leave the area and call 911. General guidance cannot establish whether your property is safe to enter.

1. Stay out of an unsafe room

Do not walk into standing water to reach a breaker, appliance or shutoff valve. Water can hide live electrical hazards, sharp debris and contamination. Keep away from a sagging ceiling or a room that may have structural damage. Leave and call 911 for immediate danger. If a gas leak is suspected, leave without using switches and contact emergency services or the utility from a safe location.

2. Get the source addressed

For an apartment leak, contact your superintendent or building manager immediately. Tell them whether water is still entering and which rooms are affected. A plumber may be needed to stop a pipe leak; a restoration crew addresses the resulting damage. These are different tasks, and extraction will not stop a continuing leak. Do not open ceilings or remove finishes to find the source yourself.

3. Make a useful record from a safe place

Photograph the overall room and then individual damaged areas. Note when you first noticed the water, where it appeared and whether the source is known. Save the messages you send to building staff. Avoid guessing at a cause in your notes: “water dripping through the bedroom ceiling at 7 a.m.” is more useful than an unverified conclusion about a neighbor’s plumbing.

4. Arrange assessment and contact your insurer

Call your insurer promptly to ask about documentation and the next steps under your policy. A drying assessment should consider the source, affected materials, hidden spaces and contamination. Do not wait for a visible mold patch before taking water damage seriously. EPA advises drying flood-affected materials quickly, ideally within 24–48 hours when possible, but safety comes first.

What to have ready when you call GreenRoom

Share the address, floor, access contact, rooms affected and whether the leak has stopped. Mention sewage, electrical concerns, restricted access and any known lead or asbestos concerns. You can call even if you do not know the square footage. GreenRoom can discuss availability and the appropriate next step; the call does not replace emergency services or a site-specific safety evaluation.

Official guidance & further reading

These resources support the general guidance above. Site conditions, policy terms and official instructions take priority. No agency endorsement is implied.

24/7 water emergency · Call now