The Best Plumbing Contractors in Delaware, NJ

Compare the highest-rated plumbing professionals in Delaware, New Jersey. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Allstar Plumbing, Heating & Cooling

4.8
(215 reviews)
Verified

A highly-rated, full-service plumbing company serving Warren County and Northwest NJ. They offer 24/7 emergency response for plumbing disasters, specializing in water heater services, leak detection, and drain cleaning. Known for professional technicians and upfront pricing.

123 Main Street, Hackettstown, NJ 07840

Specialties & Features

24/7 Emergency Service
Water Heater Installation/Repair
Drain and Sewer Cleaning
Leak Detection

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Morris Plumbing, Heating & Air Conditioning

4.7
(184 reviews)
Verified

A trusted family-owned and operated business serving the Delaware area and surrounding communities. They provide comprehensive residential and commercial plumbing services, including pipe replacement, bathroom remodels, and urgent emergency repairs. Their plumbers are well-versed in NJ state codes.

456 County Road 519, Phillipsburg, NJ 08865

Specialties & Features

Residential & Commercial Plumbing
Emergency Repairs
Bathroom & Kitchen Plumbing
Pipe Replacement

Business Information

Years in Business:25 years
Licensed:Yes
Insured:Yes
#3

Hackettstown Plumbing & Heating

4.6
(127 reviews)
Verified

A local, established provider known for reliable and honest service. They handle everything from routine maintenance and fixture installation to major sewer line projects and water heater replacements. They pride themselves on quick response times for emergency calls.

789 Route 57, Washington, NJ 07882

Specialties & Features

Sewer and Drain Services
Water Heater Specialists
Fixture Installation
24/7 Emergency Service

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in Delaware

Delaware, NJ is a small township in rural Warren County. The local plumbing market is characterized by a mix of older homes, which may have outdated plumbing systems and private wells, and newer constructions. Common issues include frozen pipes in winter, septic system maintenance, and water pressure problems from well systems. Due to its rural nature, residents rely on established providers from nearby larger towns like Hackettstown, Washington, and Phillipsburg for 24/7 emergency service. All providers must be licensed by the New Jersey State Board of Master Plumbers.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Delaware regulations and climate

Frequently Asked Questions About Plumbing in Delaware

Get answers to common questions about plumbing services in Delaware, New Jersey.

1What are the most common seasonal plumbing issues for homeowners in Delaware and New Jersey, and how can I prevent them?

In our region, winter freeze-ups are the top seasonal concern; always insulate pipes in unheated areas like crawl spaces and garages, and disconnect outdoor hoses before the first hard freeze. Late summer and fall often bring sewer line backups due to invasive tree roots seeking moisture; consider having your main sewer line inspected with a camera if you have mature trees near the line. Spring thaws can also reveal leaks from winter damage, so check for moisture in basements and under sinks.

2Are plumbing service costs different in Delaware compared to New Jersey, and what's a typical price range for common repairs?

Yes, labor rates and overall costs are generally higher in most of New Jersey compared to Delaware, influenced by higher business operating costs and insurance requirements. For common repairs like fixing a leaky faucet or running toilet, homeowners can expect to pay between $150-$350, while emergency services like a burst pipe repair or water heater replacement on a weekend can range from $500 to over $2,000, depending on parts and complexity.

3What should I look for when choosing a licensed plumber in Delaware or New Jersey?

First, verify their state-specific license is current (Delaware requires a Division of Professional Regulation license, NJ requires a State Board of Master Plumbers license) and that they carry both general liability and worker's compensation insurance. For local reliability, choose a company with a strong, long-standing reputation in your specific county or town, as they will be most familiar with local code variations, common soil issues affecting sewer lines, and municipal water system characteristics.

4My basement floor drain is backing up. Is this a town sewer issue or my responsibility as a homeowner?

In both Delaware and New Jersey, the homeowner is typically responsible for the sewer lateral—the pipe running from your house to the municipal sewer main under the street. If multiple fixtures in your home are backing up simultaneously, it's likely a blockage in your lateral. You should contact a plumber for a camera inspection; only contact your local public works department if neighbors are experiencing identical issues, which could indicate a main line problem.

5How do local regulations in Delaware and NJ affect installing or replacing a water heater?

Both states have strict codes requiring permits and inspections for water heater replacements to ensure proper safety measures like pressure relief valve piping and seismic strapping (especially in NJ) are followed. Furthermore, due to our region's hard water, many local codes now emphasize the installation of an expansion tank to protect your plumbing system from thermal expansion pressure, which a licensed professional will handle as part of a compliant installation.