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Plumbing & Repipe Cost in South Carolina (2026)

Plumbing repipe in South Carolina typically runs $4,500–$11,600 for a whole-house 2-bath PEX repipe, with PEX-A or PEX-B cross-linked polyethylene the dominant retrofit choice and the International Plumbing Code (IPC) as the adopted enforcement basis. Buried service-line trench depth must clear the 12-inch design frost line. Lowcountry parishes from Charleston through Beaufort and Hilton Head sit on tidal-influenced sandy aquifers with chloride intrusion in coastal wells, requiring point-of-entry corrosion control and dielectric unions at every metal-to-metal supply transition — and the carbonate-aquifer hard water across the Midlands and Pee Dee delivers calcium-magnesium loads above 12 grains-per-gallon driving softener installation on Columbia-area new construction.

State South Carolina
Cities Covered 13
Typical whole-house 2-bath PEX repipe $4,500 – $11,600
BLS plumber wage $26.13/hr

South Carolina water-quality & freeze drivers

  • IECC climate zone: 3A-4A — drives freeze-protection scope on supply lines
  • Frost-line trench depth: 12-inch design minimum for buried water service
  • Water hardness profile: Moderate (3.5–7 grains/gallon) — periodic appliance descaling recommended
  • Dominant retrofit supply material: PEX-A or PEX-B cross-linked polyethylene — dominant on whole-house repipes since 2005
  • Adopted plumbing code basis: International Plumbing Code (IPC) — ICC model adopted statewide
  • Lead service line risk tier: Moderate — partial pre-1986 service line inventory under utility review

South Carolina licensing & permits

  • License status: Statewide license required
  • License board: South Carolina Department of Labor, Licensing & Regulation — Contractor's Licensing Board (Mechanical/Plumbing) (official site)
  • Permit: county plumbing permit; OSWP through SC DHEC in unsewered areas

How plumbing and repipe costs vary in South Carolina

State-specific code or insurance rule: South Carolina Code §40-11-260 routes residential plumbing of $5,000+ through the Contractor's Licensing Board's Mechanical/Plumbing classification, and the SC Department of Health and Environmental Control separately permits every on-site wastewater system under 61-56 with a Master Septic Tank Contractor credential — a two-credential pathway for any rural residential build with both supply-side and septic scope.

Cities in South Carolina

Compare plumbing and repipe pricing for 13 cities across South Carolina.

Charleston, SC

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Columbia, SC

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Florence, SC

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Fort Mill, SC

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Goose Creek, SC

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Greenville, SC

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Hilton Head Island, SC

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Mount Pleasant, SC

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North Charleston, SC

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Rock Hill, SC

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Spartanburg, SC

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Summerville, SC

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Sumter, SC

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Pricing ranges reflect South Carolina market labor (BLS OEWS plumber mean $26.13/hr) and Woogoro regional cost modeling. For the most localized estimate, see your nearest city page above.