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Water supply lines and fittings inside an open wall during renovation

Wilmington, DE · plumbing service

Repiping in Wilmington, DE

Rowhouses and older homes still have galvanized supply pipe that rusts and loses pressure. Call to be connected with an independent, licensed plumber who handles repiping in Wilmington; they diagnose the problem and quote the work before starting.

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Common signs

  • Rusty water
  • falling pressure
  • repeated pinhole leaks

Repiping services in Wilmington

Problems repiping fixes

  • Rusty or discolored water
  • Pinhole leaks in different places
  • Falling water pressure
  • Galvanized or polybutylene supply pipe

Why repiping comes up in Wilmington

Rowhouses and older homes still have galvanized supply pipe that rusts and loses pressure.

Winter freezes
Regular hard freezes

How the work is done

  1. 1Survey the systemIdentify the pipe material, its condition and the fixture count.
  2. 2Plan the routeChoose PEX or copper and plan wall openings to keep them small.
  3. 3Permit and installRepiping usually requires a permit; fixtures are reconnected in stages.
  4. 4Pressure test and patchTest before inspection; openings are patched afterward.

What affects the price

The plumbing company sets the price after seeing the job; ask for it in writing before work starts.

  • Size of the home and number of fixtures
  • PEX or copper
  • Access through walls, attic or crawlspace
  • Drywall repair
  • Permit and inspection

Plumbing work we connect Wilmington homeowners with

Repiping in Wilmington: questions

Does the age of my Wilmington house matter when deciding to repipe?

Yes. Wilmington Water notes homes built before 1988 may have lead service lines, lead solder or brass fixtures. Repiping replaces those materials, though the city uses corrosion control in the meantime.

I got a lead or galvanized service line letter in Wilmington; what are my options?

Wilmington Water's notices flag lead, galvanized or unknown lines. Replacing the private portion is the owner's job, but the city offers programs to help homeowners with their share.

Why is repiping a common call in Wilmington?

Rowhouses and older homes still have galvanized supply pipe that rusts and loses pressure.

Should old pipes in a Wilmington home be repaired or replaced?

One leak in otherwise sound pipe is usually repaired; when galvanized or failing pipe leaks in several places, repiping costs less over time. In Wilmington: rowhouses and older homes still have galvanized supply pipe that rusts and loses pressure.

Who supplies water in Wilmington?

City of Wilmington. Past the meter, plumbing is the owner's.

More plumbing services in Wilmington

Local rules and details for Wilmington

Wilmington facts behind this page

  • About 48.0% of Wilmington's occupied housing units are owner-occupied. [1]
  • Wilmington's city water system draws on Hoopes Reservoir and the Brandywine, treated at the Porter Filter Plant and the Brandywine Treatment Plant, and serves about 110,000 customers. [2]
  • Wilmington Water says homes in its system built before 1988 may have lead water service lines, and may also contain lead in brass plumbing fixtures or lead solder joining copper pipes. Lead is not present when water leaves the treatment plant; in older homes it can come from service lines or in-home plumbing such as valves, fittings and faucets. The utility uses corrosion control treatment to reduce that risk. [3]
  • Under the revised Lead and Copper Rule, Wilmington Water has published a service line inventory covering lines on public and private property, and it must send annual notices to customers whose service line is lead, galvanized or of unknown material. The city notes that maintaining or replacing private lines is the owner's responsibility, but it offers programs to help homeowners replace their portion of the line. [4]

Wilmington rules and programs for repiping

  • Wilmington Water says homes in its system built before 1988 may have lead water service lines, and may also contain lead in brass plumbing fixtures or lead solder joining copper pipes. Lead is not present when water leaves the treatment plant; in older homes it can come from service lines or in-home plumbing such as valves, fittings and faucets. The utility uses corrosion control treatment to reduce that risk. [3]
  • Under the revised Lead and Copper Rule, Wilmington Water has published a service line inventory covering lines on public and private property, and it must send annual notices to customers whose service line is lead, galvanized or of unknown material. The city notes that maintaining or replacing private lines is the owner's responsibility, but it offers programs to help homeowners replace their portion of the line. [4]

Other common plumbing calls in Wilmington

  • Water Line Repair: lead and galvanized service lines still in use need replacement, and old lines leak at joints.
  • Sewer Line Repair: old clay and cast iron laterals under rowhouse blocks crack and admit roots.
Sources (4)
  1. U.S. Census Bureau QuickFacts, Wilmington city, Delaware (2020-2024) · checked 2026-10-05
  2. City of Wilmington, water quality reports and news · checked 2026-10-05
  3. Wilmington Water Utility, Lead Reduction Program · checked 2026-10-20
  4. Wilmington Water Utility, Frequently Asked Questions · checked 2026-10-20
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