Seneca County, New York · Waterloo
Water spreading, a burst pipe, sewage, mold or smoke? Call to be connected with a restoration company that serves Seneca Falls, Waterloo and Interlaken. Start the steps below while you wait.
Answered 24/7 by a participating local provider. We're a referral service and don't do the work ourselves. How it works
Start here
Pick the closest match. These steps limit the damage and protect your insurance claim. Skip anything that isn't safe.
Pipes freeze in Seneca County on about 46 nights a year, mostly November to March. Older homes, 51% of the stock here, are most at risk.
Basements flood here mostly in October. Seneca County averages 3.9 days a year with an inch of rain or more.
Backups often follow heavy rain, which Seneca County gets about 3.9 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
Roof leaks here come from summer downpours and, with about 89 freeze-thaw days a year, from winter ice dams. Most show up as ceiling stains in the room below.
25% of occupied homes in Seneca County heat mainly with wood or propane, above the New York county median of 19%.
About 18 nights a year here stay at 65°F or warmer, so basements and crawl spaces can grow mold even without a leak.
Local risk profile
Seneca County covers 324 square miles of central New York, with about 32,920 residents and 16,194 homes. Besides Waterloo, the county seat, the biggest communities are Seneca Falls, Interlaken and Ovid. It has some of the oldest housing in the state: the median home went up in 1959.
42/100 Water Damage Risk Index: Moderate Seneca County ranks 42 of 57 New York counties. See the statewide ranking and method.The three factors where Seneca County ranks highest compared with other New York counties.
Seneca County is milder than most of New York, but not mild enough to skip winterizing. From 2015–2024 it averaged 46 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 128 nights at or below 32°F. That ranks 46th of 57 counties.
The longest cold spell was straight 26 days without the temperature rising above freezing, ending in March 2015. The coldest night reached about -13°F on February 14, 2016. Burst pipes usually show up when a spell like that breaks and the ice thaws.
Expect the hardest freezes in January, inside a season that runs November to March. That's when an outdoor spigot left connected to a hose, or a pipe in a crawl space, is most likely to split.
On average the first fall freeze arrives around Oct 26 and the last spring freeze around May 2.
Seneca gets fewer downpours than most New York counties, but they still fill basements. The county gets about 37.6 inches of rain and melted snow a year, with 3.9 days of an inch or more (49th of 57). Those downpours cluster in June, July and October, when sump pumps and gutters are tested hardest. The wettest day on record brought 3.02 inches on October 21, 2016. Multi-day storms matter most for basements; the wettest three days on record here totaled 4.67 inches (through October 23, 2016).
The temperature crosses 32°F in both directions on roughly 89 days a year. Each cycle melts and refreezes water at roof edges and in foundation cracks, which is how ice dams and basement seepage get started.
Housing
69% of homes in Seneca County predate 1980, close to the New York county median of 66.8%, which ranks 21st of New York's 57 counties.
51% were built before 1960. Homes from that era often still have galvanized steel supply pipe, which rusts from the inside until it pinholes, and cast iron drains that crack with age. Slow leaks behind walls are a common start to water damage in these houses.
Here 10% of housing is manufactured homes. Check the skirting and the heat tape on the main water line every fall, because that one exposed line is what freezes.
The Census counted 16% of homes as vacant, above the New York county median of 13.9%. Empty houses are where a small leak turns into a large claim, because nobody is there to hear it.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 18 times a year here, above the New York county median of 12. Mold grows when indoor humidity stays above about 60%, the EPA's ceiling. A basement dehumidifier set to 50% and drying anything wet within 24 to 48 hours prevents most problems.
Mold remediation: what to expectMain heating fuel in Seneca County's occupied homes: 44% utility gas, 17% electric, 20% propane and 5% wood. Propane heat is above the New York norm. Annual chimney and vent inspection, which the NFPA recommends, is one of the most effective fire-prevention habits for these homes.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Seneca County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Cayuga, Ontario, Schuyler, Tompkins and Yates get more pipe-freeze nights than Seneca. Cayuga County has the oldest housing nearby, with 71% of homes built before 1980.
By the numbers
| Factor | Seneca | New York median | Rank |
|---|---|---|---|
| Homes built before 1960 | 51% | 45% | 17 of 57 |
| Homes built before 1980 | 69% | 67% | 21 of 57 |
| Homes built 2000 or later | 13% | 13% | 28 of 57 |
| Manufactured or mobile homes | 9.9% | 7.6% | 18 of 57 |
| Vacant homes | 16% | 14% | 24 of 57 |
| Wood or propane heat | 25% | 19% | 17 of 57 |
| Nights at 20°F or colder | 46/yr | 55/yr | 46 of 57 |
| Days with 1 inch+ of rain | 3.9/yr | 6/yr | 49 of 57 |
| Freeze-thaw days | 89/yr | 101/yr | 45 of 57 |
| Muggy nights (65°F+) | 18/yr | 12/yr | 13 of 57 |
Rank 1 is the highest value. Bars run from the lowest to the highest New York county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Seneca County: freezing from November to March, heavy rain in June, July and October.
Sources: U.S. Census Bureau, ACS 2024 5-year estimates (2020-2024); weather from NOAA nClimGrid-Daily county averages (EpiNOAA), 2015–2024, averaged across the county; county boundaries from Census TIGER. Reviewed 2026-10-21. Methodology