Water that arrives from the river is a different job from water that arrives from a pipe, and the difference is decided before anyone opens a toolbox. Under ANSI/IICRC S500 water from the ground or from surface flooding is category 3, grossly contaminated, so the porous materials it touched are removed rather than dried in place. It is also the water a standard homeowners policy excludes, which is why flood cover is bought separately through the National Flood Insurance Program.
For a homeowner on the Passaic, that distinction is the reason a flooded basement and a burst pipe in the same basement produce two entirely different bills, and two different conversations with an insurer.
The river runs through the middle of this service area
The Passaic River sets the flood exposure across most of the towns covered here. It runs the length of Passaic County past the Great Falls at Paterson and on through Clifton. It forms much of the northern and eastern edge of Essex County, where Nutley and Bloomfield sit across the water from Clifton and share the same basement and street flooding. In Bergen County, Fair Lawn and Elmwood Park sit on the river opposite Paterson and carry the same exposure.
That geography is why extraction and metered drying are the work done most often in these towns, and why a wet basement on a rainy weekend is a street level event and not a single household one.
What Ida did, and why it is still the reference
Hurricane Ida reached New Jersey on 1 September 2021 and produced the wettest day on record in Newark at 8.44 inches of rain. The New Jersey state climatologist records thirty lives lost to the flash flooding. It is the event most homeowners here measure a storm against, and it carries a narrower lesson as well: a rainfall total that large does not need a river to reach a basement. It arrives through the ground, through window wells, through the seams in a foundation and back up through floor drains, all at once.
The regulatory response is the part most people missed. New Jersey adopted the Inland Flood Protection Rule on 17 July 2023. It raised the design flood elevation for habitable first floors by two feet in fluvial areas and requires future rainfall projections to be used in flood elevation calculations instead of historical records alone. If you are building, elevating or substantially improving a property near a river here, that rule is now the one that governs the height you build to.
Why the category makes the decisions
Category 3 water is treated as grossly contaminated regardless of how clear it looks. The consequence in a finished basement is direct.
- Carpet and pad that the water reached are removed and not dried, because porous material cannot be decontaminated in place.
- Wet drywall and insulation are cut out to above the water line so the cavity can be cleaned and dried.
- Contents that absorbed the water are separated from contents that only got splashed, and the difference is recorded.
- The structure is cleaned before it is dried, because drying contamination into a house is not restoration.
- Only then does the drying equipment go in, with readings taken at set points each day.
Anyone can put fans in a basement. The category is what decides which materials should have left it before the fans arrived, and that call is made at the door.
The insurance split, in plain words
Flood is excluded from almost every standard homeowners policy, and cover comes from a separate National Flood Insurance Program policy through FEMA. Water backing up through a drain or a sewer line is a third case again, and it is commonly sold as an endorsement and is not included by default. Three different sources of water in one basement can therefore fall under three different answers.
Two things follow. Read your own declarations page before the next storm, not during it, and ask your agent the specific question about water and sewer backup. Whatever the answer, document the loss the same way: photograph everything before it moves, note the time, and keep the material until it has been recorded. What a file needs to contain is set out in Does homeowners insurance cover water damage in New Jersey.
What a homeowner can do before the next storm
- Get anything you would grieve for off the basement floor and onto shelving, and keep it off.
- Know where the main water shut off and the electrical panel are, and how to reach them without walking through water.
- Clear the roof gutters and check that downspouts discharge away from the foundation and not beside it.
- Check the sump pump before the season, not during the storm, and know whether it has a battery backup.
- Photograph the finished basement while it is dry. A before photograph taken on an ordinary Tuesday is the most useful document in a claim file.
- Keep the number of a restoration company that answers at any hour, because on a storm weekend the queue forms early.
After the water goes down
Extraction runs at any hour, and emergency water work is prioritized over scheduled cleaning. Materials ruled out by the category are removed and recorded. The structure is cleaned, then dried, with moisture read at fixed points and logged each day until the readings hold at a dry standard. Those readings are what end the job, and no set number of days does: a slab or a masonry wall gives its water up slowly and takes longer than a carpet.
Mold is the question that follows a flood, and it is answered by the drying record and never by a spray. If material stayed wet past the window it is treated under the mold standard on the Mold Remediation page, with containment and post remediation verification, and it is not painted over.
DHL is a service area business working across six counties, family owned since 2010, with a person answering at any hour by appointment. The full water damage method is on the Water Damage Restoration page and the estimate is free and in writing before work begins.
This article is about Flood Cleanup.