Sewage Cleanup in the City of Syracuse: When the Combined Sewer Backs Up
In the city, storm water and wastewater share pipes, so a flooded floor drain is a sewage job.
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Tell us where the water came from, what got wet and whether it has stopped. A person reads every request and matches it to a licensed, insured water damage contractor. If water is still coming in, close the main shutoff before anything else.
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What the county says about the Syracuse sewer
Onondaga County Water Environment Protection states that the City of Syracuse has a combined sewer system, carrying stormwater and sanitary flow in the same pipes, while other municipalities in the county have separate systems, and that heavy rain and snowmelt can overwhelm the combined system.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-27
Onondaga County WEP asks residents with sewage backing up to call 315-435-3157, which it answers at any time, every day, for properties connected to the public sewer inside the Consolidated Sanitary District. For City of Syracuse properties it directs the call to the City Department of Public Works on 315-448-CITY, 315-448-2489, and outside the district to the town or village, usually its DPW. Properties not on public sewer are told to contact a licensed plumber or service expert.
Source: Onondaga County Department of Water Environment Protection, accessed 2026-09-24
American Community Survey 2020 to 2024 estimates put 34,927 of the City of Syracuse's 59,816 occupied housing units, 58.4 percent, as renter occupied, the highest share of the sixteen towns in this metro. Of 67,601 units, 7,785, or 11.5 percent, were vacant, and 4,262 of those were classed as other vacant rather than for rent, for sale or seasonal.
Source: US Census Bureau, American Community Survey 2020 to 2024 five year estimates, accessed 2026-09-24
New York Real Property Law section 235-b provides that in every written or oral residential lease the landlord is deemed to warrant that the premises and common areas are fit for human habitation and free of conditions dangerous, hazardous or detrimental to life, health or safety, except where the condition was caused by the misconduct of the tenant. Any agreement by a tenant waiving or modifying these rights is void as contrary to public policy.
Source: New York State Senate, accessed 2026-09-24
The combined sewer under Syracuse
Onondaga County Water Environment Protection says the City of Syracuse has a combined sewer, carrying stormwater and sanitary flow in the same pipes, and that heavy rain and snowmelt can overwhelm it. When that happens, what rises through a city basement floor drain is a mix of both. It is treated as grossly contaminated, whatever it looks like. Stop running water in the house, keep children and pets out, and photograph the drain and the water line before anyone starts cleaning.
City side first, then the cleanup
For a City of Syracuse property, the county directs sewage backup calls to the city Department of Public Works on 315-448-2489, which can check the public side. That call comes before the cleanup is scoped. After it, soaked drywall, insulation and carpet come out, hard surfaces are cleaned and disinfected, and only then does drying start. In a rental, the tenant tells the owner in writing, because a contaminated unit is a habitability question as well as a cleanup.
Rule out the public sewer first
Stop running water and call whoever runs your sewer before a private cleanup is booked. Their side costs you nothing to check.
Ask what comes out and what is cleaned
Porous materials soaked by sewage generally come out; hard surfaces and framing are cleaned and disinfected. The list should be written down before work starts.
Photograph where it came up
The drain, the toilet or the wall it came through, and the height it reached. Backup water and flood water are read under different parts of a policy.
Sewage or flood water in a Syracuse basement?
Stop running water, keep people out and photograph where it came up. Then send the details.
Other Syracuse water damage jobs
Syracuse questions about sewer backups
Sewage came up in my Syracuse basement during a storm. Who do I call first?
The city Department of Public Works, on 315-448-2489, to check the public sewer. Stop using water in the house while you wait. Then photograph where it came up and how high it reached before the cleanup starts.
Why can sewage-soaked drywall not be dried in place?
Because it is treated as grossly contaminated. The CDC advises removing and discarding drywall and insulation contaminated with sewage or flood water, and the industry standard treats backflow from beyond a trap as the most contaminated category.
Tell us where the water came up in Syracuse
Floor drain, toilet, tub or through a wall from outside. It decides what the cleanup is.