5 services · Delaware
Leaks, pipes & freezing in Delaware
Delaware has hot, humid summers and cool winters with periodic hard freezes, which split pipes in rowhouse basements, exterior walls and unheated vestibules, especially in vacant units.
- Licensed local plumbers
- The problem explained before work starts
- Price agreed before the job begins

Statewide conditions
Leaks, pipes & freezing in Delaware: what to know
Homes range from older rowhouses in Wilmington, with older service lines and galvanized supply, to newer suburban construction on slabs. Wilmington runs its own water utility drawing from the Brandywine Creek, while other areas are served by other utilities.
Delaware regulates plumbers through its Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration, and permits come from city or county offices.
- Climate
- Delaware gets periodic hard freezes and ice storms, often after mild spells, which catch exposed pipes off guard. Pipes in crawl spaces, exterior walls and garages are the first to freeze.
- Typical foundations
- Homes range from older rowhouses in Wilmington to newer suburban construction, with both basements and slabs common. Most common: basements.
Leaks, pipes & freezing services
Burst pipe repair
Turn off the main water shutoff first, then open a faucet on the lowest floor to drain the lines. A plumber cuts out the split section, replaces it, and checks the rest of that pipe run, because one freeze rarely damages only one spot.
Frozen pipe thawing
If a faucet gives no water or only a trickle after a hard freeze, a pipe is frozen. Leave that faucet open, warm the area gently, and call a plumber if you can't find the frozen section or if it's inside a wall, because a split pipe will leak as soon as it thaws.
Leak detection
Turn off every fixture and watch the water meter's leak indicator. If it moves, water is leaking somewhere. A plumber uses pressure tests, acoustic listening and thermal imaging to find the leak so only a small section of wall or floor has to be opened.
Repiping
Repiping replaces a home's water supply lines, usually because old galvanized steel has corroded or polybutylene is at risk of failing. Most repipes today use PEX, take two to five days, and are done through small wall openings rather than gutting the house.
Water line repair
The water service line runs from the curb stop near the street to your house, buried below the frost line. A leak shows up as a soggy patch in the yard, low pressure throughout the house, or a meter that never stops. Repair means finding the leak, then fixing that spot or replacing the line.
Leaks, pipes & freezing by city in Delaware
Local pages cover each city's water provider, permit office and housing. Not listed? Check your ZIP code below.
Leaks, pipes & freezing questions in Delaware
Do pipes freeze in Delaware?
Should I turn off the water if a pipe bursts?
How these problems start and how to choose between repair options is covered in the leaks, pipes & freezing guide.
More plumbing in Delaware
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