Area guideEast Northport
Water Damage Restoration Help in East Northport, NY
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The hamlet of East Northport · Town of Huntington
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 East Northport, 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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None of the 7,068 addresses in East Northport is in FEMA's flood zone, so the water that damages homes here usually comes from their own pipes and drains, not from a flood.
East Northport at a glanceTap a figure to see it on the map
Flood risk: LowFlood zone. None of the 7,068 addresses here is inside FEMA's mapped flood zone or within about 100 ft of it.
Groundwater. None of the 7,068 addresses measured here has groundwater within 14 ft of the surface.
So water in a basement here comes in from above: rain, a pipe or an appliance.
Each square is about 500 ft across. Color shows the typical depth under its addresses (USGS map, spring 2013):
- Deeper than 25 ft7,068
Sewer. 145 of the 7,068 addresses in East Northport have a county sewer main mapped past them. That does not mean every house is connected.
At the other 6,923, a backup means a cesspool or septic tank, and a pumping company. On a main, it means a plumber, or the sewer district if the main is blocked.
Each square is about 500 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 East Northport homes
None of East Northport's built-up land is in FEMA's flood zone, so floodwater from outside is not the main threat to homes here. What damages homes here is closer to home: water getting into the basement, a pipe that freezes and splits, a full or failing cesspool and an aging pipe giving way.
- Water in the basement. With groundwater averaging 153 ft deep, water in an East Northport basement is a leak or runoff problem rather than a groundwater one, which makes the source easier to find and fix. Rain soaks into East Northport's soil quickly, so water that pools against the house after a storm usually points to a gutter, a downspout or the grading. Basement Flooding help in East Northport
- A burst pipe. If a pipe bursts, shut the main water valve first; a split supply line keeps running at full pressure until someone does. Fuel oil heats about 46% of East Northport's homes, so a missed delivery in a cold week can leave a house without heat long enough for a pipe to freeze and split. Frozen Pipe Burst help in East Northport
- 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. At 6,923 of the 7,068 addresses in East Northport, wastewater goes to a cesspool or septic tank because no sewer main is mapped past them, so a full or failing system can push sewage back into the house. Cesspool Overflow help in East Northport
- A leak in a wall or ceiling. A leak caught early is a drying job; one that has run for weeks inside a wall is a mold job, so have it opened up and dried properly. More than half of East Northport's houses predate 1970, so many still have original supply and drain lines, where a slow leak can run behind a wall for weeks before it shows. 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 East Northport
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.
284 streets, from county address records. Nothing you type is sent anywhere.
Streets with a mapped sewer main
County records map an active sewer main past 145 of 7,068 address points in East Northport. On 6 streets nearly every address has one; the largest:
- Casey Ln — 18 addresses
- Kimber Ct — 18 addresses
- Cori Ln — 12 addresses
- Marshall Ln — 10 addresses
- Harrison Woods Ct — 9 addresses
- Hill Ln — 6 addresses
Quick facts — East Northport
Flood and storm
- FEMA flood zone
- X (minimal)
In an emergency
- Nearest fire department
- East Northport Fire Department
- Nearest emergency shelter
- Commack Middle 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
- 11731
Homes here
- Sewer status
- Unsewered (Cesspool/Septic)
- Home heating fuel
- 46% fuel oil Utility gas heats 47% of occupied homes in East Northport. Census estimates; the oil figure is within 7 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 35% of East Northport'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.
Sources: FEMA NFHL / NOAA SLOSH, US Census ACS, USDA SSURGO, Suffolk County records. Verified 2026-10-18. How we measured this.
East Northport and nearby areas
None of the other 6 areas compared here has a smaller mapped floodplain share than East Northport.
- Centerport 7.1%
- Fort Salonga 5.7%
- Kings Park 1.7%
- East Northport 0.0%
- Commack 0.0%
- Elwood 0.0%
- Greenlawn 0.0%
Share of developed area inside FEMA's mapped floodplain, largest first.
East Northport has the deepest average groundwater of the 7 areas compared here.
- Centerport 70 ft
- Fort Salonga 80 ft
- Kings Park 85 ft
- Commack 97 ft
- Elwood 127 ft
- Greenlawn 137 ft
- East Northport 153 ft
Average depth to groundwater, shallowest first.
5 of the other 6 areas compared here have lower average ground than East Northport.
- Centerport 82 ft
- Fort Salonga 93 ft
- Kings Park 121 ft
- Commack 154 ft
- Elwood 201 ft
- East Northport 202 ft
- Greenlawn 205 ft
Average height above sea level, lowest first.
East Northport measures 153 ft on water table, where its 6 neighbors average 99 ft. Groundwater sits deeper under East Northport than under the areas around it. The second gap is ground elevation: 202 ft against 143 ft next door. East Northport sits on higher ground than the areas around it.
Compared with the areas around East Northport. How we measured them.
Frequently asked questions about East Northport
Is East Northport in a flood zone?
East Northport has no developed land inside a FEMA special flood hazard area, per FEMA's flood map (NFHL). The flood map describes surface flooding only, so it says nothing about groundwater, sewer or plumbing failures.
Does East Northport have public sewer, or cesspools?
East Northport is unsewered — nearly every property runs on its own cesspool or septic system.
How deep is the water table in East Northport?
The measured water table runs about 153 ft below the surface on average across East Northport. None of the 7,068 addresses is mapped within 25 ft of it.
How old are homes in East Northport?
The average home in East Northport is about 67 years old, and 80% of the housing stock predates 1970 — older plumbing and unwaterproofed foundations are a common factor in local water damage.
About the figures for East Northport
Check them at the source
Who to call for water damage in East Northport
(631) 440-4144Tell us what is happening. We connect you with a local specialist who covers East Northport.