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TRUSTED BY ISLIP, NY HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1.4k+
    Verified affordable plumbing services reviews

Top-Rated Affordable plumbers in Islip - Updated Nov 2026

Avatar for Reliable Plumbing & Heating
Reliable Plumbing & Heating
4.9(
14
)
Water Heater - Install or Replace

Serving Islip, NY and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I was on the fence in replacing my water heater. I decided to get some quotes from plumbers. I came across Reliable Plumbing. I read their customer reviews, which were highly favorable. Then I spoke to Jerry. Which was like talking to an old friend. Jerry's honesty and professionalism won me over. Paul the plumber came 2 days later, did a great job. Paul was professional. Pollite and explained everything to me. I was extremely happy with the price, the service and the honesty. I will be using Reliable Plumbing going forward"
6 neighbors recently requested a quote
Avatar for PRIORITY CESSPOOL SEWER & DRAIN, INC
PRIORITY CESSPOOL SEWER & DRAIN, INC
4.8(
270
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessSewer Main - Clear+3 more

Serving Islip, NY and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"I can't find the words to adequately state just how satisfied we were with this significant job. From start to finish John and his crew, Paul and Mike, were absolutely fantastic. They listened to all our concerns and went above and beyond what was called for. During the installation an exterior water pipe was hit that was unknown to us as well as John. John stopped the installation and fixed the broken pipe that was now leaking in the basement. This clearly was not his fault or his responsibility and I was more than pleased to not have to call a plumber! Obviously damage to landscape with this type of work is to be expected, however when all was complete it was clear that John minimized the upheaval to our yard. I would HIGHLY recommend John to anyone in need of a new cesspool system. My only regret is that John's buisness is limited to cesspools as he is the type of individual and buisnessman I would love to use for all of my home repairs!
"
Additional Photos
Response time8 hrs
Response rate100%
Recommended by96%of homeowners
A&M Plumbing & Heating
4.8(
12
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+9 more

Serving Islip, NY and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

We are a locally owned and operated business committed to providing exceptional service, quality workmanship, and honest communication on every project we undertake. Our experienced team takes pride in delivering customized solutions tailored specifically to meet each client's unique needs. We value integrity and reliability, ensuring every job is completed to your satisfaction. Our goal is to build lasting relationships with our customers through consistency, professionalism, and outstanding results. Let us show you why homeowners continually choose us as their trusted service provider.

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Affordable Plumbers FAQs, answered by experts

Watch out for quotes that omit local permit fees for substantial plumbing work. Contractors who claim permits are unnecessary shift significant legal risk onto you. A quote lacking a valid local license number is a serious warning sign. Be cautious of vague plans regarding cesspool decommissioning or municipal sewer connections. Legitimate professionals in NY will always include post-completion inspections in their plans to ensure the work meets local safety standards.

Helpful?

Leaving hoses attached to outdoor bibs through fall prevents proper draining and causes freeze damage at the wall. Ignoring unconditioned crawl spaces in Islip leaves exposed pipes vulnerable to winter freezing. If you rely on well water, failing to monitor mineral hardness accelerates scale buildup inside your plumbing and water heaters. Flushing heavy paper products or grease into older cesspool systems causes rapid system failure and hazardous home backups.

Helpful?

The humid climate and coastal weather in Islip directly impact plumbing. High groundwater and storm surges create hydrostatic pressure, increasing the risk of basement flooding and sewer backflow. Salt air accelerates corrosion on exposed outdoor fixtures. You must bury water supply lines at least 36 inches deep to meet NY state code and prevent winter freeze damage. Insulate pipes in unconditioned spaces to stop summer condensation and winter freezing.

Helpful?

Underground water service lines require proper bedding in Islip due to sandy soils and mandatory frost depth requirements. Improper installation leads to pipe settlement and freeze damage. Sump pump discharge routing is another sensitive area for plumbing; directing discharge into the sanitary sewer violates local ordinances. Connecting to municipal sewers or decommissioning cesspools demands exact compliance. Always secure local permits for major work to avoid serious resale and safety issues.

Helpful?

Cosmetic plumbing updates, like replacing a faucet, finish quickly and bypass local permit requirements. Functional work, such as relocating drains, requires full permits and mandatory inspections that extend project timelines. In Islip, functional upgrades that increase water usage demand strict septic system reviews to ensure proper load sizing. Opening walls for functional repairs in older NY homes also triggers strict lead paint regulations and potential flood zone compliance measures.

Helpful?

The Islip, NY homeowners’ guide to affordable plumbing services

From average costs to expert advice, get all the answers you need to get your job done.