Johnson County, Georgia · Wrightsville
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With 18% of homes built before 1960 and about 1 hard-freeze night a year, frozen and split pipes are a leading winter risk in the county.
January brings the most downpours to Johnson County, part of 11.8 heavy-rain days a year. Check the sump first.
Sewage backups in Johnson County spike on heavy-rain days, about 11.8 a year, when sewer mains fill up and water finds the lowest drain.
Johnson County's wettest day in the 2015–2024 record brought 4.71 inches, and about 26 freeze-thaw days a year mean ice dams in some winters.
13% of occupied homes in Johnson County heat mainly with wood or propane, above the Georgia county median of 7.1%.
About 118 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
Johnson County covers 303 square miles of central Georgia, with about 9,190 residents and 3,560 homes. Besides Wrightsville, the county seat, the biggest community is Kite. Much of its housing is recent, with a median build year of 1985.
49/100 Water Damage Risk Index: Elevated Johnson County ranks 85 of 159 Georgia counties. See the statewide ranking and method.The three factors where Johnson County ranks highest compared with other Georgia counties.
For frozen pipes, Johnson County is a typical Georgia county, which is still plenty. It averaged 26 freezing nights a year over 2015–2024, 1 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 159 Georgia counties that's 85th.
The freeze season here runs midwinter, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
On average the first fall freeze arrives around Nov 21 and the last spring freeze around Mar 13.
Rainfall is about average for Georgia. Of roughly 50 inches of yearly precipitation, the damage comes from the 11.8 days a year with an inch or more, ranked 94th of 159. January, February and December see the most. The single wettest day in the record: 4.71 inches, September 27, 2024. Multi-day storms matter most for basements; the wettest three days on record here totaled 7.91 inches (through September 28, 2024).
The temperature crosses 32°F in both directions on roughly 26 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
43% of homes in Johnson County predate 1980, above the Georgia county median of 38.4%, which ranks 48th of Georgia's 159 counties.
Housing age is mixed: 18% of homes are pre-1960 and 21% are 2000 or newer. Ask any plumber which era your house is from and you'll know which failures to watch for.
The 1980s and 1990s account for 36% of the county's homes. If yours is from those decades, look under the sinks and at the water heater for gray plastic pipe stamped PB, which is polybutylene and leak-prone.
33% of homes are manufactured or mobile homes, above the Georgia county median of 20.9%. 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
Summer nights that don't drop below 65°F, a good marker of humid air, come about 118 times a year here, close to the Georgia county median of 112. 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 expectBy main heating fuel, Johnson County homes break down as 5% utility gas, 79% electric, 12% propane and 1% wood. Propane heat is more common here than the state median. Have chimneys swept and fuel-burning appliances serviced each fall, and keep three feet clear around stoves and space heaters.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Johnson County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Jefferson and Washington get more pipe-freeze nights than Johnson. Washington County has the oldest housing nearby, with 51% of homes built before 1980.
By the numbers
| Factor | Johnson | Georgia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 18% | 15% | 53 of 159 |
| Homes built before 1980 | 43% | 38% | 48 of 159 |
| Homes built 2000 or later | 21% | 27% | 115 of 159 |
| Manufactured or mobile homes | 33% | 21% | 23 of 159 |
| Vacant homes | 9.6% | 14% | 118 of 159 |
| Wood or propane heat | 13% | 7.1% | 44 of 159 |
| Nights at 20°F or colder | 1/yr | 2/yr | 85 of 159 |
| Days with 1 inch+ of rain | 12/yr | 12/yr | 94 of 159 |
| Freeze-thaw days | 26/yr | 29/yr | 84 of 159 |
| Muggy nights (65°F+) | 118/yr | 112/yr | 70 of 159 |
Rank 1 is the highest value. Bars run from the lowest to the highest Georgia county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Johnson County: freezing from midwinter, heavy rain in January, February 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