Duplin County, North Carolina · Kenansville
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With 18% 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.
July brings the most downpours to Duplin County, part of 12.5 heavy-rain days a year. Check the sump first.
18% 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.
Duplin County's wettest day in the 2015–2024 record brought 9.71 inches, and about 44 freeze-thaw days a year mean ice dams in some winters.
18% of occupied homes in Duplin County heat mainly with wood or propane, above the North Carolina county median of 11.7%.
About 101 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
With 23,861 homes and around 49,335 residents, Duplin County is 815 square miles of eastern North Carolina. Besides Kenansville, the county seat, the biggest communities are Wallace, Warsaw and Rose Hill. Much of its housing is recent, with a median build year of 1986.
47/100 Water Damage Risk Index: Elevated Duplin County ranks 60 of 100 North Carolina counties. See the statewide ranking and method.The three factors where Duplin County ranks highest compared with other North Carolina counties.
Winters here are on the gentler end for North Carolina, and pipes still freeze. In the 2015–2024 record the county logged about 3 nights a year at or below 20°F (74th of 100) and 45 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
The freeze season here runs January, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
Freezing nights typically start around Nov 14 and end around Mar 21.
Rainfall is about average for North Carolina. Of roughly 56.3 inches of yearly precipitation, the damage comes from the 12.5 days a year with an inch or more, ranked 35th of 100. July, August and September see the most. The single wettest day in the record: 9.71 inches, September 15, 2018. The worst three-day stretch dropped 17.63 inches, ending September 16, 2018, the kind of soaking that overwhelms sump pumps and storm sewers.
About 44 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
North Carolina's 100 counties range widely in housing age; Duplin ranks 51st, with 41% of its homes built before 1980.
Older and newer homes sit side by side here: 18% predate 1960 and 26% are from 2000 or later. Corroded pipe is the typical failure in the first group, burst supply hoses in the second.
About 33% 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 31% 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 101 times a year here, above the North Carolina county median of 88.5. 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 Duplin County's occupied homes: 3% utility gas, 77% electric, 18% propane and under 1% wood. Propane heat is more common here than in most North Carolina counties. Heating equipment is one of the leading causes of home fires nationally, and the NFPA recommends having chimneys and vents inspected every year.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Duplin County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Lenoir and Wayne get more pipe-freeze nights than Duplin. Lenoir County has the oldest housing nearby, with 54% of homes built before 1980.
By the numbers
| Factor | Duplin | North Carolina median | Rank |
|---|---|---|---|
| Homes built before 1960 | 18% | 18% | 50 of 100 |
| Homes built before 1980 | 41% | 41% | 51 of 100 |
| Homes built 2000 or later | 26% | 26% | 51 of 100 |
| Manufactured or mobile homes | 31% | 17% | 7 of 100 |
| Vacant homes | 13% | 13% | 53 of 100 |
| Wood or propane heat | 18% | 12% | 29 of 100 |
| Nights at 20°F or colder | 3/yr | 5/yr | 74 of 100 |
| Days with 1 inch+ of rain | 13/yr | 12/yr | 35 of 100 |
| Freeze-thaw days | 44/yr | 57/yr | 69 of 100 |
| Muggy nights (65°F+) | 101/yr | 89/yr | 26 of 100 |
Rank 1 is the highest value. Bars run from the lowest to the highest North Carolina county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Duplin County: freezing from January, 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