Area guideCopiague
Water Damage Restoration Help in Copiague, NY
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The hamlet of Copiague · Town of Babylon
Water in the basement, a burst pipe, or sewage backing up into the house? Call and we'll connect you with a local specialist who covers Copiague, even if you don't know the cause yet.
Water doesn't stay where it lands. It soaks into drywall, insulation and flooring, and mold can start within 24 to 48 hours.
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Since 1978, federal flood insurance has paid $34.9 million on 808 claims in ZIP 11726, which takes in Copiague, so water has reached homes here before.
Copiague at a glanceTap a figure to see it on the map
Flood risk: Very HighFlood zone. 1,740 of the 7,184 addresses here are inside FEMA's mapped flood zone. 922 more are within about 100 ft of its edge.
If your home is in it, most mortgage lenders must require flood insurance. That is a separate policy from homeowner's insurance, which usually covers a burst pipe or leaking appliance.
The percentage above counts all developed land, including lawns, parks and roads, not just homes.
Each square is about 400 ft across. Color shows how many of its addresses are mapped inside the zone:
- Fewer than half
- Half or more
- All
Groundwater. At 6,950 of the 7,142 addresses measured here, groundwater is within 14 ft of the surface, close enough to reach a basement floor.
In those basements, water can seep up through the floor and come back after pumping until the ground drains. The 192 measured deeper are the exception.
42 addresses fall where the groundwater map has no reading.
Each square is about 400 ft across. Color shows the typical depth under its addresses (USGS map, spring 2013):
- Within 10 ft5,600
- 10 to 14 ft1,350
- 14 to 25 ft192
Sewer. 6,822 of the 7,184 addresses in Copiague have a county sewer main mapped past them. That does not mean every house is connected.
Where a house is connected, a backup is a blocked line. A plumber clears the pipe to the street. The sewer district clears the main.
Each square is about 400 ft across. Color shows how many of its addresses have a mapped main:
- Fewer than half
- Half or more
- All
What is happening at your home?
Other water emergencies we cover
Not sure which one fits? Call (631) 440-4144 and tell us what you see.
Why water gets into Copiague homes
Copiague has two kinds of water risk. Outside, a hurricane or a hard nor'easter can drive surge into homes; inside the house, the risks are a blocked sewer line, water rising through the basement floor, pipes bursting in the cold and an aging pipe giving way.
- Water coming in from outside. Know your hurricane evacuation zone and leave when the county calls it; the house can be dried afterward, and the sooner drying starts, the more of it is saved. Storm surge is the biggest water threat in Copiague, where a hurricane or a hard nor'easter can drive water from Great South Bay into streets and ground floors, and 24.7% of its built-up land is in FEMA's flood zone. Look up your street. Storm Damage Restoration help
- Sewage coming up a drain. Standard homeowners policies usually exclude sewage backup unless a water-backup endorsement was added, so check yours and photograph the damage before cleanup starts. Copiague is on public sewer, which means sewage in the house comes from a blocked house line or a street main pushing back, and either way the cleanup is the same: remove, disinfect, dry. Sewage Backup help in Copiague
- Water in the basement. Groundwater in a basement returns after a pump-out unless a sump pump keeps up, so drying the walls and floor matters as much as removing the water. Copiague's groundwater sits only about 9 ft down, within reach of a basement floor, which is why water can come up from below even when it is not raining. Basement Flooding help in Copiague
- A burst pipe. A frozen pipe that has not split yet can be saved: open the tap and warm the line gently from the tap end back, never with a flame. Pipes in outside walls, crawlspaces and unheated garages freeze first, and in Copiague's homes, about 63 years old on average, much of that plumbing predates modern insulation. Frozen Pipe Burst help in Copiague
- A leak in a wall or ceiling. Mold can start on wet drywall within a day or two, so a slow leak needs the wall opened and dried, not just the pipe fixed. With 62% of its homes built before 1970, Copiague has a lot of original plumbing, and an old pipe tends to fail slowly, as a stain or a soft floor, before it fails all at once. Ceiling & Roof Leak Water Damage help
Insurance and safety guidance from FEMA FloodSmart, the CDC and the Red Cross. How we measured the figures.
Street by street in Copiague
See how many of its addresses are mapped inside the FEMA flood zone, how deep groundwater is mapped under it, and whether a sewer main is mapped past it.
252 streets, from county address records. Nothing you type is sent anywhere.
Streets inside the FEMA flood zone
1,740 of 7,184 address points in Copiague are mapped inside a FEMA special flood hazard area. These streets hold the most of them:
- East Dr — 99 of 99 addresses
- W Lido Prom — 67 of 73 addresses
- West Dr — 65 of 65 addresses
- E Santa Barbara Rd — 56 of 67 addresses
- Coolidge Ave — 50 of 69 addresses
- Inlet Dr — 47 of 47 addresses
- Doges Prom — 47 of 47 addresses
- Baylawn Ave — 41 of 77 addresses
Streets with a mapped sewer main
County records map an active sewer main past 6,822 of 7,184 address points in Copiague. On 229 streets nearly every address has one; the largest:
- Great Neck Rd — 154 addresses
- Montauk Hwy — 144 addresses
- Lafayette St — 118 addresses
- Waldo St — 102 addresses
- Deauville Blvd — 100 addresses
- East Dr — 99 addresses
- Oak St — 98 addresses
- Cambridge Dr W — 91 addresses
Quick facts — Copiague
Flood and storm
- FEMA flood zone
- AE (100-yr floodplain)
- Hurricane evacuation zone
- Zone A Zones run A to E. A evacuates first.
- Water nearby
-
Great South Bay to the south, Ketchams Creek to the south-west and Gateway Lagoon to the south-east.
Each direction is to its nearest point, from the center of Copiague.
All 8 named water features
- East: Strongs Creek
- South-east: Gateway Lagoon, Great Neck Creek
- South: Great South Bay, Howell Creek
- South-west: Ketchams Creek, Woods Creek
- North-west: Amityville Creek
Copiague's land area
- FEMA coastal wave zone (VE)
- FEMA 100-year floodplain (AE)
- The flood-zone figure above says how much of the land these zones cover.
Homes here
- Sewer status
- Sewered
- Home heating fuel
- 22% fuel oil Utility gas heats 69% of occupied homes in Copiague. Census estimates; the oil figure is within 4 points. An oil tank can float or tip in a flood and spill. That is a separate cleanup from the water (NYS DEC). In a cold snap, an empty tank means no heat.
- When homes were built
- 1950s 27% of Copiague's homes were built in the 1950s, more than in any other decade band. Census estimate, within 5 points. Homes from the 1950s are about 70 years old. Past 30 years, an insurance-industry study (IBHS) found supply and drain pipe problems three times as likely.
In an emergency
- Nearest fire department
- Copiague Fire Department
- Nearest emergency shelter
- West Babylon Junior High SchoolNot every shelter opens for every storm, and the nearest may stay closed. Suffolk County announces which ones open; follow its alerts and local news before you go.
- ZIP code
- 11726
Sources: FEMA NFHL / NOAA SLOSH, US Census ACS, USDA SSURGO, Suffolk County records. Verified 2026-10-18. How we measured this.
Copiague and nearby areas
2 of the other 5 areas compared here have a larger mapped floodplain share than Copiague.
- Gilgo 39.9%
- Amityville 29.5%
- Copiague 24.7%
- Lindenhurst 12.2%
- North Amityville 0.0%
- North Lindenhurst 0.0%
Share of developed area inside FEMA's mapped floodplain, largest first.
1 of the other 5 areas compared here has shallower average groundwater than Copiague.
- Lindenhurst 6 ft
- Copiague 9 ft
- Amityville 10 ft
- Gilgo 10 ft
- North Lindenhurst 13 ft
- North Amityville 14 ft
Average depth to groundwater, shallowest first.
3 of the other 5 areas compared here have lower average ground than Copiague.
- Gilgo 10 ft
- Lindenhurst 13 ft
- Amityville 18 ft
- Copiague 19 ft
- North Amityville 41 ft
- North Lindenhurst 42 ft
Average height above sea level, lowest first.
Copiague's sewer coverage is 100%, against an 80% average across the 5 areas around it. Copiague is more sewered than the areas around it. The second gap is seasonal-housing share: 0% against 10% next door. Fewer homes in Copiague sit empty for part of the year than in the areas around it.
Compared with the areas around Copiague. How we measured them.
Frequently asked questions about Copiague
Is Copiague in a flood zone?
Copiague's FEMA-mapped flood zone is AE (100-yr floodplain), covering about 24.7% of the developed area, per FEMA's flood map (NFHL).
Does Copiague have public sewer, or cesspools?
Copiague is on public sewer — about 100% of developed land sits inside an active sewer district, so backups here usually trace to the municipal main or your lateral.
How old are homes in Copiague?
The average home in Copiague is about 63 years old, and 62% of the housing stock predates 1970 — older plumbing and unwaterproofed foundations are a common factor in local water damage.
Is Copiague in a hurricane evacuation zone?
Copiague falls in Suffolk County hurricane evacuation Zone A. Check the county's current maps before a named storm — zones are what county officials use when ordering evacuations.
About the figures for Copiague
Check them at the source
Who to call for water damage in Copiague
(631) 440-4144Tell us what is happening. We connect you with a local specialist who covers Copiague.