For homeowners in New Castle County, DE, plumbing issues are more than just an inconvenience. Left unchecked, small problems can quickly turn into expensive repairs, water damage, and unexpected emergencies. From older housing stock and seasonal temperature swings to hard water and aging infrastructure, Delaware homes face some very specific plumbing challenges.
This guide breaks down the most common plumbing problems homeowners encounter in New Castle County, how to spot them early, what you can safely do to prevent damage, and when it’s time to call a professional plumber in New Castle County. The goal is simple, help you protect your home, avoid emergencies, and make informed decisions about plumbing repair in Delaware.
Why Plumbing Problems Are Common in New Castle County, DE
Before diving into specific issues, it helps to understand why plumbing problems are so common in this region.
Homeowners in New Castle County deal with:
- A large number of older homes with aging pipes
- Hard water, which accelerates mineral buildup
- Freezing winter temperatures that stress pipes
- Heavy rainfall that strains sump pumps and sewer lines
- Mixed municipal and private sewer systems
These factors make proactive plumbing maintenance in Delaware especially important.
Leaky Faucets and Pipes
Why This Happens in New Castle County Homes
Leaky faucets and pipes are among the most common plumbing problems in Delaware. Older homes often have worn washers, corroded fittings, or outdated pipe materials that break down over time. Seasonal temperature changes cause pipes to expand and contract, which can loosen connections or create small cracks.

Early Warning Signs
- Constant dripping from faucets
- Water stains on ceilings or walls
- Damp cabinets under sinks
- Higher-than-normal water bills
DIY Prevention Tips
- Replace worn faucet washers early
- Insulate exposed pipes before winter
- Periodically check under sinks and in basements
- Avoid overtightening fixtures, which can cause damage
When to Call a Plumber in New Castle County
If leaks persist, worsen, or appear inside walls or ceilings, it’s time to call a professional. Hidden leaks can lead to mold growth, structural damage, and costly repairs if ignored.
Clogged Drains and Sewer Backups
Why This Happens Locally
Clogged drains in New Castle County are often caused by grease buildup, soap residue, hair, and food waste. Older sewer lines may also be affected by tree root intrusion, shifting soil, or pipe collapse. Heavy rain can overwhelm sewer systems and cause backups.
Early Warning Signs
- Slow-draining sinks or tubs
- Gurgling sounds from drains
- Frequent toilet clogs
- Foul odors coming from drains
DIY Prevention Tips
- Never pour grease down drains
- Use drain strainers in sinks and showers
- Flush drains monthly with hot water
- Avoid chemical drain cleaners, which damage pipes
When to Call an Emergency Plumber in New Castle County
If multiple drains back up at once, sewage smells are present, or water backs up into tubs or floor drains, this is an emergency. Sewer backups require immediate professional attention to protect your home and health.
Running or Overflowing Toilets
Why This Happens in Delaware Homes
Running toilets are often caused by worn flappers, faulty fill valves, or improper float adjustment. In older homes, outdated internal components wear out faster, especially with mineral-rich water.
Early Warning Signs
- Toilet runs long after flushing
- Water trickling sounds
- Weak or incomplete flushes
- Toilet overflowing unexpectedly
DIY Prevention Tips
- Replace flappers every few years
- Avoid flushing wipes or paper towels
- Periodically inspect internal components
- Shut off water immediately if overflowing
When to Call a Professional
If repairs don’t stop the problem or if the toilet overflows repeatedly, a licensed plumber can diagnose underlying issues such as drain blockages or faulty plumbing connections.

Low Water Pressure
Why This Is Common in New Castle County
Low water pressure is frequently linked to mineral buildup from hard water, aging galvanized pipes, leaks, or municipal supply issues. Older neighborhoods are especially prone to pressure problems.
Early Warning Signs
- Weak shower flow
- Slow-filling appliances
- Pressure drops when multiple fixtures are used
DIY Prevention Tips
- Clean faucet aerators regularly
- Check for visible leaks
- Flush water heaters annually
When to Call a Plumber
Persistent low water pressure often points to hidden leaks, corroded pipes, or system-wide issues that require professional plumbing repair in Delaware.
Water Heater Issues
Why Water Heaters Fail Locally
Water heater problems are common due to sediment buildup from hard water, aging tanks, and lack of routine maintenance. Cold winters also put added strain on water heaters.
Early Warning Signs
- No hot water or inconsistent temperature
- Discolored or rusty water
- Rumbling or popping noises
- Water pooling around the tank
DIY Prevention Tips
- Flush the tank annually to remove sediment
- Test the pressure relief valve
- Keep the area around the heater clear
When to Call for Water Heater Repair in Delaware
Leaks, complete loss of hot water, or unusual noises should be addressed immediately by a professional to prevent tank failure or flooding.
Sump Pump and Basement Flooding Concerns
Why This Is a Serious Issue in New Castle County
Heavy rain, high water tables, and snowmelt put New Castle County homes at risk for basement flooding. Sump pumps are critical, but they fail without regular testing or during power outages.
Early Warning Signs
- Sump pump runs constantly
- Strange noises from the pump
- Damp basement floors or walls
- Musty odors
DIY Prevention Tips
- Test sump pumps before rainy seasons
- Keep discharge lines clear
- Install a battery backup system
When to Call a Plumber
If your sump pump fails or flooding occurs, professional help is essential to prevent water damage and mold growth.
Aging or Corroded Pipes in Delaware Homes
Why Older Homes Are at Risk
Many homes in New Castle County still have galvanized steel, cast iron, or older copper piping. These materials corrode over time, restricting flow and increasing leak risk.
Early Warning Signs
- Brown or yellow water
- Frequent leaks
- Decreased water pressure
- Visible corrosion
DIY Prevention Tips
- Monitor water quality
- Avoid using harsh chemicals
- Schedule regular plumbing inspections
When to Call a Professional Plumber
A licensed plumber should always handle pipe replacement or repiping to ensure safety, code compliance, and long-term reliability.
Areas We Serve
Plumbing First Delaware proudly serves homeowners throughout New Castle County, DE, and surrounding communities in Northern Delaware, including:
- New Castle County
- Townsend
- Middletown
- Newark
- Wilmington
- Bear
- Smyrna
- Odessa
- Clayton
- Nearby towns and residential communities throughout Northern Delaware
If you’re searching for a reliable plumber in New Castle County, help is always close by.
Why Early Plumbing Repairs Matter
Ignoring plumbing problems can lead to:
- Higher repair costs
- Water damage and mold growth
- Health and safety risks
- Reduced home value
Regular plumbing maintenance in Delaware helps homeowners catch small issues before they become emergencies.
Call a Trusted Local Plumber in New Castle County Today
If you’re dealing with plumbing problems, don’t wait for a small issue to turn into a costly emergency. Plumbing First Delaware provides reliable residential plumbing services, inspections, repairs, and emergency support for homeowners across New Castle County.

Plumbing First Delaware
110 Sycamore Lane, Townsend, DE 19734
Call Now: 302-497-5862
Hours:
Monday – Friday: 8:00 AM – 8:00 PM Saturday – Sunday: 8:00 AM – 8:00 PM
Whether you need routine plumbing repair in Delaware or an emergency plumber in New Castle County, our team is ready to help. Call today to schedule an inspection or get immediate assistance and protect your home with confidence.