Jasper County, South Carolina · Ridgeland
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Jasper County averages 1 night a year at 20°F or colder, mostly midwinter, and 5% of its homes predate 1960.
Heavy rain days of an inch or more come about 12.3 times a year here, most often in July. A sump pump that hasn't run since last season is a common weak point.
5% 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 Jasper County, 11.51 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 Jasper County heat mainly with wood or propane, below the South Carolina county median of 5.1%.
Muggy summer nights, lows of 65°F or more, come about 136 times a year in Jasper County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 32,166 people live in Jasper County, 655 square miles in southern South Carolina, in roughly 14,758 homes. Ridgeland is the county seat; Hardeeville, Gillisonville and Coosawhatchie are the next largest communities. Much of its housing is recent, with a median build year of 2003.
34/100 Water Damage Risk Index: Moderate Jasper County ranks 41 of 46 South Carolina counties. See the statewide ranking and method.The three factors where Jasper County ranks highest compared with other South Carolina counties.
Jasper County is milder than most of South Carolina, but not mild enough to skip winterizing. From 2015–2024 it averaged 1 night a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 16 nights at or below 32°F. That ranks 40th of 46 counties.
With only about 16 freezing nights a year, many homes here aren't built for cold, so a single arctic outbreak can burst pipes across the county. The record low in this data was about 16°F, on December 25, 2022.
Rainfall is about average for South Carolina. The county gets about 51.1 inches of rain and melted snow a year, with 12.3 days of an inch or more (21st of 46). Those downpours cluster in July, August and September, when sump pumps and gutters are tested hardest. The wettest day on record brought 11.51 inches on October 8, 2016. Multi-day storms matter most for basements; the wettest three days on record here totaled 11.82 inches (through August 8, 2024).
Housing
South Carolina's 46 counties range widely in housing age; Jasper ranks 44th, with 18% of its homes built before 1980.
57% 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 25% 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.
26% of homes are manufactured or mobile homes, above the South Carolina county median of 22%. Their water lines run under the floor behind the skirting, so a torn skirt or failed heat tape freezes them faster than lines in a site-built house.
Beyond water
Jasper County averages 136 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in August. Keep indoor humidity under 60%, as the EPA advises, and dry any leak within 24 to 48 hours; in a humid month a wet basement left alone won't dry by itself.
Mold remediation: what to expectBy main heating fuel, Jasper County homes break down as 19% utility gas, 75% electric, 4% propane and under 1% wood. Most homes here heat with gas or electricity, so cooking and electrical faults are the likelier fire sources. Even a contained kitchen fire can send soot through the ductwork to every room.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Jasper County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Jasper gets more pipe-freeze nights than any of its neighbors. Hampton County has the oldest housing nearby, with 44% of homes built before 1980.
By the numbers
| Factor | Jasper | South Carolina median | Rank |
|---|---|---|---|
| Homes built before 1960 | 5.1% | 15% | 42 of 46 |
| Homes built before 1980 | 18% | 40% | 44 of 46 |
| Homes built 2000 or later | 57% | 25% | 1 of 46 |
| Manufactured or mobile homes | 26% | 22% | 17 of 46 |
| Vacant homes | 11% | 16% | 34 of 46 |
| Wood or propane heat | 4.1% | 5.1% | 32 of 46 |
| Nights at 20°F or colder | 1/yr | 2/yr | 40 of 46 |
| Days with 1 inch+ of rain | 12/yr | 12/yr | 21 of 46 |
| Freeze-thaw days | 16/yr | 35/yr | 44 of 46 |
| Muggy nights (65°F+) | 136/yr | 114/yr | 3 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 Jasper County: freezing from midwinter, heavy rain in July, August and September.
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