Four Seasons Cesspool
“He got someone to us quickly who was very knowledgeable and did a great job!”
Best Septic Tank Installers near Smithtown, NY
These companies serve Smithtown from nearby bases in towns including Kings Park, Islandia and Centereach.
15 companies listed · 9 open 24/7 · 11 open weekends · all 15 rated 4.5+ · 6 show a license
Data verified October 18, 2026
Discount Cesspool & Drain Inc.
“It Was refreshing to have someone explain everything that was needed to be done correctly so I didn't have to pay an arm and a leg every couple of years with getting my Cesspool pumped!!”
Rescue Cesspool & Drain
“Job was done right and perfect and cleaned up like they weren't even there.”
Affordable Cesspool Sewer & Drain
“Affordable Cesspool called us back within minutes of leaving a message and got to our house within a few hours to fix our problem.”
Suffolk County Cesspool Service
“Experienced-they will show you exactly what the issue is and explain what needs to be done.”
White Wolf Cesspool Services
“Very professional and diligently addressed any concerns I had, i highly recommend White Wolf Cesspool”
The 15 companies listed for Smithtown, NY design and install septic systems and replace failed drain fields. Each company's own site is the source for its hours, license claims and estimate policy. Ask who pulls the permit and who schedules the health department inspection.
Area overview: Smithtown, NY
The 15 companies on this page are rated from 4.5 to 5.0 across 1,705 reviews; 6 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (97%), responsiveness (94%) and quality (87%). The topics that come up most in reviews of the companies on this page are "price", "crew" and "knowledge". 9 are open around the clock and 11 are open on weekends. 6 show a license on their websites and 1 has a BBB rating of A or A+. 12 have ten or more years of experience, the longest 38 years. 10 offer emergency call-outs; 10 give free estimates; 4 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 15 of the companies on this page; 13 publish a contact page; 8 list a public email and 2 take bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do any listed installers say they are licensed?
6 of the 15 listings for Smithtown show a license on their websites. Septic installation is licensed separately from general contracting in many places, so confirm the credential covers on-site sewage work rather than excavation in general. The health department that issues permits can usually tell you who is approved locally.
Quality Cesspool
“They were able to schedule us immediately and finished a giant project quickly and perfectly.”
Bill Mallins Cesspool Service Corp.
“They are everything you would want in a company you call for service.”
Vecchio Cesspool
“I would not hesitate to recommend them for any cesspool related issues”
Perfect Pumping LLC
“They completed the job quickly, and at a very fair price, and left my yard neat and clean.”
Ez Cesspool Long Island
“I used EZ Cesspool initially to pump my cesspool & then at a later date to install a new system and the service & qualiy was amazing !!”
Evenflow Sewer and Drain Service
“To put it simply…if you're looking for a provider to be responsive; reasonable; honest; experienced; reliable; respectful; and caring to your concerns…look no further.”
Homeport Engineering
“You will get more than your money's worth, I ended up with great peace of mind knowing that I got an informed, professional inspection that leaves me with exactly what I need to know.”
Tom Egan Cesspool Service
“Having plumbing/cesspool problems is never a good experience but having a competent, professional company like Tom Egan Cesspool Service available who you can rely on and trust to get the work done is priceless.”
Environmental Angels
“I was so pleased with the service I received from this business.”
Why these companies made our list
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