Spartanburg County, South Carolina · Spartanburg
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With 16% of homes built before 1960 and about 3 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
April brings the most downpours to Spartanburg County, part of 12.5 heavy-rain days a year. Check the sump first.
16% of homes here predate 1960, when clay and cast iron sewer laterals were standard. Roots and cracks in those lines are a common cause of backups.
In Spartanburg County, 6.4 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
4% of occupied homes in Spartanburg County heat mainly with wood or propane, below the South Carolina county median of 5.1%.
With 96 muggy nights a year, mold in Spartanburg County can appear within days of a leak. Dry first, then clean.
Local risk profile
Spartanburg County covers 808 square miles of northwest South Carolina, with about 347,852 residents and 144,170 homes. Spartanburg is the county seat; Boiling Springs, Valley Falls and Lyman are the next largest communities. Much of its housing is recent, with a median build year of 1990.
60/100 Water Damage Risk Index: Elevated Spartanburg County ranks 11 of 46 South Carolina counties. See the statewide ranking and method.The three factors where Spartanburg County ranks highest compared with other South Carolina counties.
Spartanburg is on the colder side of South Carolina for pipes. In the 2015–2024 record the county logged about 3 nights a year at or below 20°F (7th of 46) and 49 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
Most freezing nights fall from January, peaking in January. Disconnect garden hoses and shut off outdoor spigots before the first hard frost, and keep the heat at 55°F or higher if you'll be away.
On average the first fall freeze arrives around Nov 16 and the last spring freeze around Mar 22.
Heavy rain is a bigger factor here than in most of South Carolina. The county gets about 52.3 inches of rain and melted snow a year, with 12.5 days of an inch or more (16th of 46). Those downpours cluster in January, April and December, when sump pumps and gutters are tested hardest. The wettest day on record brought 6.4 inches on September 27, 2024. Multi-day storms matter most for basements; the wettest three days on record here totaled 8.27 inches (through September 28, 2024).
About 48 days a year swing from below freezing at night to above freezing by day. Those freeze-thaw cycles feed ice dams on roofs, open cracks in foundations and driveways, and stress pipes that are already marginal.
Housing
Roughly 38% of the county's housing was built before 1980. That puts Spartanburg near the middle of South Carolina's 46 counties.
35% of homes were built in 2000 or later, more than in most of South Carolina. Newer plumbing rarely corrodes, so damage here tends to come from appliance supply lines, water heaters, sump pumps and storms.
About 26% of homes went up between 1980 and 1999. Some houses from the late 1970s to the mid-1990s were plumbed with polybutylene, a gray plastic pipe known for failing at fittings. A plumber can tell you in a few minutes whether you have it.
Here 12% 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.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 96 times a year here, below the South Carolina county median of 113.5. The EPA recommends keeping indoor humidity below 60%, ideally 30 to 50%. Basements can pass 60% on their own in summer, so a dehumidifier matters even without a leak, and anything wet should be dried within 24 to 48 hours.
Mold remediation: what to expectMain heating fuel in Spartanburg County's occupied homes: 26% utility gas, 68% electric, 3% propane and under 1% wood. Fires here are likelier to start in the kitchen or the wiring than in the furnace. After any fire, keep the HVAC off until ducts are checked, or soot will travel through the house.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Spartanburg County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Cherokee and Greenville get more pipe-freeze nights than Spartanburg. Union County has the oldest housing nearby, with 64% of homes built before 1980.
By the numbers
| Factor | Spartanburg | South Carolina median | Rank |
|---|---|---|---|
| Homes built before 1960 | 16% | 15% | 17 of 46 |
| Homes built before 1980 | 38% | 40% | 25 of 46 |
| Homes built 2000 or later | 35% | 25% | 13 of 46 |
| Manufactured or mobile homes | 12% | 22% | 38 of 46 |
| Vacant homes | 8.7% | 16% | 40 of 46 |
| Wood or propane heat | 4% | 5.1% | 34 of 46 |
| Nights at 20°F or colder | 3/yr | 2/yr | 7 of 46 |
| Days with 1 inch+ of rain | 13/yr | 12/yr | 16 of 46 |
| Freeze-thaw days | 48/yr | 35/yr | 8 of 46 |
| Muggy nights (65°F+) | 96/yr | 114/yr | 38 of 46 |
Rank 1 is the highest value. Bars run from the lowest to the highest South Carolina county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Spartanburg County: freezing from January, heavy rain in January, April and December.
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