Sewer Backup and Basement Flooding in Manlius
Thirteen areas of this town and four more in the village are already recorded as flooding. Checking your address against that list is the fastest free step after the water goes down.
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Seventeen Manlius locations already written down as flood prone
Once the line is open and the house is draining, the question is whether the water was your pipe's fault or your location's, and Manlius has published more of that answer than most places. The Town annex to the county hazard plan names thirteen areas vulnerable to recurring flooding, including Cranebrook, Bishops Brook, Falcon View, Sugarland, South and North Eagle Village, Duguid Road, Hoag Lane and Muirfield, Long Meadow Subdivision, Troop K at Route 173, Maricarol Lane, Macclenthen Road and the 100 block of Homewood. The Village annex separately names Glencliffe Road, Route 173 West, Tyler Court and Brookhill Drive. Check the address before treating this as a drain fault.
What sewer backup involves
Location or lateral: reading a Manlius wet basement
Weigh the address against the published list, then weigh the water itself. Clear water arriving during a storm at one of the seventeen named locations has an explanation that starts outside your property. Foul water rising through the lowest fixture is the sanitary side and belongs to your line until proven otherwise. Then work the county's prevention steps, which are ordered by cost rather than by drama: keep fats, oils, grease and wipes out, find any sump pump, roof drain or gutter wrongly connected to the sanitary sewer, remove or redirect an unneeded basement sewer connection, plug or fit a one-way device to a floor drain, and fit a valve last.
Town and village keep separate lists
Thirteen areas in the town annex and four more in the village annex are named as flood prone. They are different documents, so check the one that covers your address.
Clear water and foul water are different jobs
Storm water arriving at grade and sewage returning up a floor drain look similar on a wet floor and have nothing in common as repairs. Photograph it before cleanup.
The wrong connection is the cheap find
Sump pumps, roof drains and gutters plumbed into the sanitary sewer are on the county's own causes list. They are also the item most often located in a single afternoon.
The town's thirteen areas, the village's four, and the causes list
The Town of Manlius annex to the 2025 county hazard mitigation plan names thirteen areas vulnerable to recurring flooding: Cranebrook, Bishops Brook, Falcon View, Sugarland, South Eagle Village, North Eagle Village, Duguid Road, Hoag Lane and Muirfield, Long Meadow Subdivision, Troop K and Route 173, Maricarol Lane, Macclenthen Road and the 100 block of the Homewood neighborhood. The Village of Manlius annex separately names Glencliffe Road, Route 173 West, Tyler Court and Brookhill Drive north and south.
Source: Onondaga County 2025 Multi-Jurisdictional Hazard Mitigation Plan, accessed 2026-09-08
WEP names three causes of basement backups: blockages in the sewer line, inflow during heavy rainfall overwhelming the sewer system, and tree roots infiltrating sewer pipes. Its published prevention steps are to keep fats, oils, grease and wipes out of the drain, to check for sump pumps, roof drains and gutters wrongly connected to the sanitary sewer, to eliminate or redirect an unneeded basement sewer connection, to plug or fit a one-way device to a basement floor drain that connects to the sanitary sewer, and to have a licensed plumber install a backwater valve, which must be inspected and cleaned regularly. The department warns that while a backwater valve is holding back a surcharge it is also stopping flow from leaving the house.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-08
The EPA lists the causes of sanitary sewer overflows as inappropriate materials sent to the sewers including fats, oils and grease and products marked flushable such as baby wipes and sanitary pads; tree roots entering through defects or openings in a sewer line; leaky sewers admitting stormwater, groundwater and snowmelt through cracks and faults; inappropriate connections of sump pumps, roof leaders, foundation drains and area drains; improper or inadequate maintenance and cleaning; inadequate pump maintenance; undersized sewers and pumps; and equipment failures and breaks. It also states that where basements flood with sewage the damaged area must be thoroughly cleaned and disinfected and that rugs, curtains, flooring, wallboard and upholstered furniture that contact sewage usually must be replaced.
Source: US Environmental Protection Agency, National Pollutant Discharge Elimination System, accessed 2026-09-08
Is your address on one of the two lists?
Tell us the street and what came in, and we will say whether this points at location or at your line.
Other basement and drain work we arrange in Manlius
What Manlius owners ask once the basement is dry
Is my Manlius street known to flood?
There is a published list and it is long. The Town annex names Cranebrook, Bishops Brook, Falcon View, Sugarland, South and North Eagle Village, Duguid Road, Hoag Lane and Muirfield, Long Meadow Subdivision, Troop K and Route 173, Maricarol Lane, Macclenthen Road and the 100 block of Homewood. The Village annex separately names Glencliffe Road, Route 173 West, Tyler Court and Brookhill Drive north and south.
What has to be thrown out after sewage in a Manlius basement?
More than people expect. The EPA states that where basements flood with sewage the damaged area must be thoroughly cleaned and disinfected, and that rugs, curtains, flooring, wallboard and upholstered furniture that contact sewage usually must be replaced. Photograph everything before it goes, because that record is the one thing you cannot recreate later.
Tell us what came up in your Manlius basement
Send your ZIP code and what you saw. Phones are answered 24/7 and there is no obligation.